Diffusion transfer products adapted for multiple application of processing composition and/or opacifier and processes for their use

ABSTRACT

An integral negative-receiver film unit is disclosed which is adapted for one-step processing. The film unit comprises a transparent support coated with an image-receiving layer and having thereon a photosensitive element comprising at least one, and preferably three, silver halide emulsion layers having associated therewith nondiffusible dye image-providing materials capable of reacting with oxidized developing agent to produce diffusible dyes, and a top sheet which can be transparent or opaque. Two rupturable containers or one container with two compartments containing either a processing composition or an opacifier or both are positioned (a) adjacent the top layer of the photosensitive element and sheet and (b) adjacent the imagereceiving layer or a contiguous reflective layer and the bottom layer of the photosensitive element. The film unit is placed in a camera, exposed and then passed between a pair of pressureapplying members in the camera as it is being removed therefrom. The pressure-applying members rupture the containers and spread processing composition and/or opacifier over and underneath the photosensitive element to render it light insensitive. The processing composition develops the exposed silver halide layers and diffusible dye images are formed as a result of development which diffuse to the image-receiving layer to provide a positive, right-reading image which is viewed through the transparent support on an opaque reflecting layer background which is present initially in the film unit or formed by opacifier in a rupturable container. Several embodiments of the film unit may be interchangeably employed cameras either with or without an imagereversing optical system.

States Patent Cole [ Jan. 18,1972

[72] Inventor: Harold E. Cole, 8 Cottonwood Lane, Pittsford, NY. 14534[51] ..G03c 11/48, G03c 5/54, G03c 7/00 [58] Field oi Search ..96/3, 76C, 29 D [56] References Cited UNITED STATES PATENTS 2,607,685 8/1952Land ..96/29D Primary Examiner-Norman G. Torchin AssistantExaminer-Alfonso T. Suro Pico Attorney-W. H. J. Kline, J. R. Frederickand Harold E. Cole [57] ABSTRACT An integral negative-receiver film unitis disclosed which is adapted for one-step processing. The film unitcomprises a transparent support coated with an image-receiving layer andhaving thereon a photosensitive element comprising at least one, andpreferably three, silver halide emulsion layers having associatedtherewith nondiffusible dye image-providing materials capable ofreacting with oxidized developing agent to produce diffusible dyes, anda top sheet which can be transparent or opaque. Two rupturablecontainers or one container with two compartments containing either aprocessing composition or an opacifier or both are positioned (a)adjacent the top layer of the photosensitive element and sheet and (b)adjacent the image-receiving layer or a contiguous reflective layer andthe bottom layer of the photosensitive element. The film unit is placedin a camera, exposed and then passed between a pair of pressure-applyingmembers in the camera as it is being removed therefrom. Thepressure-applying members rupture the containers and spread processingcomposition and/or opacifier over and underneath the photosensitiveelement to render it light insensitive. The processing compositiondevelops the exposed silver halide layers and diffusible dye images areformed as a result of development which diffuse to the image-receivinglayer to provide a positive, rightreading image which is viewed throughthe transparent support on an opaque reflecting layer background whichis present initially in the film unit or formed by opacifier in arupturable container. Several embodiments of the film unit may beinterchangeably employed cameras either with or without animage-reversing optical system.

65 Claims, 6 Drawing Figures *iIL/(AL/NE P goassswa EXPOSE UPAC/FYIIVGCOMPOSITION l9 OVA/V DYE MMG are.

TERLAYER 2146517774 DYE IMAGE PROV/DI REW-SEWSITIVE S/LVE Z'IEAFPRIERINTER]. Y I? ML IDA EMUL 8/017 PATENTEDJmam I 346350707 SHEET 2 [IF 2OPAC/FY/A/G COMPOSITION HLM 0 32 /0 Fla 2.9 TRANSPARENT SHEET 2SPOLYMER/C ACID LAYER 27 POLYMER/C TIMING LAYER 9 CYAN DYE IMAGEPROVIDING MATERIAL 2ORED-SENSITIVE SILVER HAL/DE EMULSION 2/ BARRIERINTERLAYER Z2 MAGENTA DYE IMAGE PROV/DING MATERIAL 23 GREEN-SENSITIVESILVER HAL/DE EMULSION 24 BARRIER INTERLAYER 25 YELLOW DYE IMAGEPROVIDING MATERIAL 26 BLUE-SENS/T/VE SILVER I-IAL/DE EMULSION I8 PERMEABLE SUPPORT I6 IMAGE- RECEIVING LAYER I5 TRANSPARENT SUPPORT 30 T fT 5 1w; COMPOSITION EXPOSE CONTAINING OPACIFY/NG AGENT OPAC/FYI/VGCOMPOSITION FILM u/v/T 5 EXPOSE 29 TRANSPARENT SHEET 30 N {1 N 32 T 28POLYMER/C ACID LAYER 27 POLYMERIC TIMING LAYER ZGBLUE-SENSIT/VE SILVERHAL/DE EMULSION 25 YELLOW DYE IMAGE PROVIDING MATERIAL 24 BARR/ERINTERLAYER .23 GREEN-SENSITIVE SILVER HAL/DE EMULSION Z2 MAGENTA DYEIMAGE PROV/DING MATERIAL 2/ BARRIER INTERLAYER 2O RED-SENSITIVE SILVERHAL/DE EMULSION I9 CYAN DYE IMAGE PROV/DING MATERIAL I8 PERMEABLESUPPORT I7 OPAOUE REFLECTIVE LAYER I6 IMAGE-RECEIVING LAYER I5TRANSPARENT SUPPORT AL IfAL IN 30 PROCESSING COMPOSITION F AL RAL/A/EpRocEssm/a as OPAQUE LAYER COMPOS/T/ON aRoLY/wER/c ACID LAYER 27POLYMER/C TIM/N6 LAYER 1 /0 /9 cYA/v DYE IMAGE PROVIDING MATER/AL2ORED-SENSITIVE SILVER HAL/DE EMULSION 2/ BARRIER INTERLAYER 22 MAGENTADYE IMAGE PROV/DING MATERIAL 23 GREEN-SENSITIVE SILVER HAL/DE EMULSION24 BARRIER INTERLA YER 25 YELLOW DYE IMAGE PROV/DING MATERIAL 26'BLUE-SENSITIVE SILVER HALIDEEMUL S/ON I8 PERMEABLE SUPPORT I6IMAGE-RECEIVING LAYER I5 TRANSPARENT SUPPORT HAROLD E. COLE 3O 4TINVENTOR.

BY Mi /7% A T TORNE Y E X P OS E OPACIF Y IN G COMPOSITION DIFFUSIONTRANSFER PRQD'UCTS ADAPTER) FGR MUll/llllPlLE AlllPLllCA'llllUN UhPllilGtIlESfilNG COMPOSHTKUN AND/UR QIAClllFllEHt AND lPlltUtIlESSlESFOR THEIR USE This invention relates to photography and moreparticularly to an integral, negative-receiver color diffusion transferfilm assembly, which can be exposed in a camera and processed outsidethe camera to yield a right-reading positive image.

Prior art U.S. Pat. No. 3,415,644; 3,415,645; and 3,415,646 describedfilm assemblies designed for image transfer in which the receiving layeris not separated from the photosensitive element after processing whichtakes place out of the camera in room light. In order to obtain aright-reading positive, these prior art film assemblies require eitheran image-reversing optical system in the camera or require that anopaque sheet be placed over the top of the assembly after exposure andprior to removing the film assembly from the camera for processing.

It is an object of my invention to provide a novel film assembly whichdoes not require an image-reversing optical system in a camera in orderto obtain a right-reading positive, thus enabling the camera to employ aconventional optical system, to be less expensive and be less bulky, butwhich can in several embodiments be interchangeably employed in suchcameras, if desired.

Another object of my invention is to provide a novel film assembly whichdoes not require an in-camera lamination of an opaque sheet to the filmassembly after exposure in order to obtain room light processingcapability, thus enabling the camera to be less expensive and lessbulky.

Another object of my invention is to provide a novel film assembly whichcan be exposed in a camera, processed outside the camera in room lightto yield a right-reading positive image, and which does not requiretiming of development or any stripping away of the receiving layer fromthe negative portion of the photosensitive element after processing.

Still another object of my invention is to provide new processes forobtaining transfer images employing the novel film assemblies describedherein.

These and other objects are obtained by the photographic film unit of myinvention which is adapted to be processed by passing the unit between apair of juxtaposed pressure-applying members and which comprises:

a. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising at least one photosensitivesilver halide emulsion layer, each said silver halide emulsion layerhaving associated therewith a nondiffusible dye image-providing materialcapable of reacting with oxidized developing agent to produce adiffusible dye;

b. a top sheet superposed over the outermost layer of the photosensitiveelement from the transparent support;

c. a first rupturable container being so positioned during processing,preferably transverse a leading edge of the photosensitive element, thata compressive force applied to the first container by thepressure-applying members will effect a discharge of the firstcontainers contents between the top sheet and the outermost layer of thephotosensitive element; and

d. a second rupturable container being so positioned during processing,preferably transverse a leading edge of the photosensitive element, thata compressive force applied to the second container by thepressure-applying mem bers will effect a discharge of the secondcontainers contents between the image-receiving layer and the innermostlayer of the photosensitive element from the transparent support;

the film unit containing a developing agent, one of the rupturablecontainers containing an opacifying agent, and the other rupturablecontainer containing an alkaline processing composition.

In accordance with a first embodiment of my invention, the top sheet istransparent, the first rupturable container contains an alkalineprocessing composition having therein an opacifying agent and the secondrupturable container contains an opacifying agent.

in accordance with a second embodiment of my invention, the top sheet istransparent, the first rup'turable container contains an opacifyingagent and the second rupturable container contains an alkalineprocessing composition having therein an opacifying agent.

In accordance with a third embodiment of my invention, the top sheet istransparent, the first rupturable container contains an opacifyingagent, the second rupturable container contains an alkaline processingcomposition, and the film unit contains an opaque reflecting layerintermediate the image-receiving layer and the photosensitive element.

In accordance with a fourth embodiment of my invention, the top sheet isopaque, the first rupturable container contains an alkaline processingcomposition and the second rupturable container contains an opacifyingagent.

In using the various embodiments of the film assembly of this invention,the photosensitive unit is placed in a camera, exposed, and then passedbetween pressure-applying members in the camera as the unit is beingremoved therefrom. This compressive force breaks open the rupturablecontainers and spreads opacifying agent and processing composition intothe film unit. The negative portion of the film assembly will then besurrounded by opaque material to render it light insensitive, thusenabling the assembly to be removed from the camera during development.The processing composition diffuses through the film unit to eithereffect or initiate imagewise development of the silver halide emulsionlayers. lmagewise distributions of diffusible dye image-providingmaterial which is contained in each silver halide emulsion layer or in alayer contiguous thereto, are formed as a function of the imagewiseexposure of each said silver halide emulsion layer. At least a portionof the imagewise distributions of diffusible dye image-providingmaterial diffuse to the imagereceiving layer to produce a positive dyeimage which can be viewed through the transparent support layer. Thereceiver portion of the film unit does not have to be stripped away fromthe rest of the film unit and no timing of development is required.

Exposure and removal of the film assembly of my invention from a cameracan be accomplished in. a matter of seconds, thus freeing the camera foruse in taking another photograph. Whereas prior art film assembliesrequire relatively expensive, bulky cameras, with obvious disadvantages,for providing within the camera a mechanical film-handling system tomanipulate the film after exposure to laminate an opaque sheet over thetop prior to removing the film unit from the camera for processing, thefilm assembly of my invention can be employed in a very simple,inexpensive camera in which the only film movement in the camera afterexposure occurs when the film unit passes between a pair ofpressure'applying rollers as it is being removed from the camera. Forexample, the film assembly of my invention could be employed in a camerahaving the film-handling mechanism similar to that illustrated in U.S.Pat. No. 3,447,437, either with or without the image-reversing opticalsystem illustrated in that patent, depending upon the particularembodiment employed. The ability to interchange film units of myinvention with prior art film units for use in cameras either with orwithout an imagereversing optical system is an important aspect of thisinventron.

FIG. I is a perspective view of a first embodiment of a film unitaccording to the invention.

FIG. 2 and FIG. 3 are diagrammatic cross-sectional views of the filmunit of FIG. I along section line 22, illustrating the various elementsof a typical film unit before and after rupture of the rupturablecontainers or pods, the thickness of the various components beingexaggerated for purposes of illustration.

FIG. 4, FIG. 5, and FIG. 6 are diagrammatic cross-sectional views of asecond, third and fourth embodiment, respectively, of typical film unitsaccording to my invention.

The film assembly of my invention can be used to produce positive imagesin single or multicolors. In a three-color system, each silver halideemulsion layer of the film assembly of my invention will have associatedtherewith a dye imageproviding material possessing a spectral absorptionrange substantially complementary to the predominant sensitivity rangeof its associated emulsion, i.e., the blue-sensitive silver halideemulsion layer will have a yellow dye image-providing materialassociated therewith, the green-sensitive silver halide emulsion layerwill have a magenta dye image-providing material associated therewith,and the red-sensitive silver halide emulsion layer will have a cyan dyeimage-providing material associated therewith. The dye image-providingmaterial associated with each silver halide emulsion layer may becontained either in the silver halide emulsion layer itself or in alayer contiguous to the silver halide emulsion layer.

Spectral sensitizing dyes can be used conveniently to confer additionalsensitivity to the light sensitive silver halide emulsion of themultilayer photographic elements of the invention. For instance,additional spectral sensitization can be obtained by treating theemulsion with a solution of a sensitizing dye in an organic solvent orthe dye may be added in the form of a dispersion as described in Owenset al. British Pat. No. 1,154,781. For optimum results, the dye caneither be added to the emulsion as a final step or at some earlierstage.

Sensitizing dyes useful in sensitizing such emulsions are described, forexample, in Brooker et al. U.S. Pat. No. 2,526,632; issued Oct. 24,1950; Sprague U.S. Pat. No. 2,503,776; issued Apr. 11, 1950; Brooker etal. U.S. Pat. No. 2,493,748; and Taber et al. U.S. Pat. No. 3,384,486.Spectral sensitizers which can be used include the cyanines,merocyanines, complex (trior tetranuclear) merocyanines, complex (triortetranuclear) cyanines, homopolar cyanines, styryls, hemicyanines (e.g.,enamine hemicyanines), oxonols and hemioxonols. Dyes of the cyanineclasses can contain such basic nuclei as the thiazolines, oxazolines,pyrrolines, pyridines, oxazoles, thiazoles, selenazoles and imidazoles.Such nuclei can contain alkyl, alkylene, hydroxyalkyl, sulfoalkyl,carboxyalkyl, aminoalkyl and enamine groups and can be fused tocarbocyclic or heterocyclic ring systems either unsubstituted orsubstituted with halogen, phenyl, alkyl, haloalkyl, cyano, or alkoxygroups. The dyes can be symmetrical or unsymmetrical and can containalkyl, phenyl, enamine or heterocyclic substituents on the methine orpolymethine chain. The merocyanine dyes can contain the basic nucleimentioned above as well as acid nuclei such as thiohydantoins,rhodanines, oxazolidenediones, thiazolidenediones, barbituric acids,thiazolineones, and malononitrile. These acid nuclei can be substitutedwith alkyl, alkylene, phenyl, carboxyalkyl, sulfoalkyl, hydroxyalkyl,alkoxyalkyl, alkylamino groups, or heterocyclic nuclei. Combinations ofthese dyes can be used, if desired. In addition, supersensitizingaddenda which do not absorb visible light can be included, for instance,ascorbic acid derivatives, azaindenes, cadmium salts, and organicsulfonic acids as described in McFall et al. U.S. Pat. No. 2,933,390 andJones et al. U.S. Pat. No. 2,937,089.

The various silver halide emulsion layers of a color film assembly ofthe invention can be disposed in the usual order, i.e., theblue-sensitive silver halide emulsion layer first with respect to theexposure side, followed by the green-sensitive and red-sensitive silverhalide emulsion layers as shown in the drawing. If desired, a yellow dyelayer or a Carey Lea silver layer can be present between theblue-sensitive and green-sensitive silver halide emulsion layer forabsorbing or filtering blue radiation that may be transmitted throughthe blue-sensitive layer. If desired, the selectively sensitized silverhalide emulsion layers can be disposed in a different order, e.g., theblue-sensitive layer first with respect to the exposure side, followedby the red-sensitive and green-sensitive layers.

The silver halide emulsions used in this invention can comprise, forexample, silver chloride, silver bromide, silver chlorobromide, silverbromoiodide, silver chlorobromoiodide or mixtures thereof. The emulsionscan be coarse or fine grain and can be prepared by any of the well-knownprocedures, e.g., single jet emulsions, double jet emulsions, such asLippmann emulsions, ammoniacal emulsions, thiocyanate or thioetherripened emulsions such as those described in Nietz et al. U.S. Pat. No.2,222,264; lllingsworth U.S. Pat. No. 3,320,069; and McBride U.S. Pat.No. 3,271,157. Emulsions that contain silver halide grains havingsubstantial surface sensitivity can be used, and emulsions that containsilver halide grains having substantial sensitivity inside the grainscan be used as those described in Davey et al. U.S. Pat. No. 2,592,250;Porter et al. U.S. Pat. No. 3,206,313; and Bacon et al. U.S. Pat. No.3,447,927. The emulsions can be regular grain emulsions such as the typedescribed in Klein and Moisar, J. Phat. Sci., Vol. 12, No. 5, Sept/Oct,1964 pp. 242-251. Negative-type emulsions can be used or direct positiveemulsions can be used such as those described in Leermakers U.S. Pat.No. 2,184,013; Kendall et al. U.S. Pat. No. 2,541,472; Berriman U.S.Pat. No. 3,367,778; Schouwenaars British Pat. No. 723,019; lllingsworthet al. French Pat. No. 1,520,821; Ives U.S. Pat. No. 2,563,785 Knott etal. U.S. Pat. No. 2,456,953 and Land U.S. Pat. No. 2,861,885.

The emulsions used in this invention can be sensitized with chemicalsensitizers, such as with reducing agents; sulfur selenium or telluriumcompounds; gold, platinum or palladium compounds; or combinations ofthese. Suitable procedures are described in Sheppard et al. U.S. Pat.No. 1,623,499; Waller et al. U.S. Pat. No. 2,399,083; McVeigh U.S. Pat.No. 3,297,447; and Dunn U.S. Pat. No. 3,297,446.

The silver halide emulsions used in this invention may contain speedincreasing compounds such as polyalkylene glycols, cationic surfaceactive agents and thioethers or combinations of these as described inPiper U.S. Pat. No. 2,886,437; Dann et al. U.S. Pat. No. 3,046,134;Carroll et al. U.S. Pat. No. 2,944,900; and Goffe U.S. Pat. No.3,294,540.

The silver halide emulsions used in the practice of this invention canbe protected against the production of fog and can be stabilized againstloss of sensitivity during keeping. Suitable antifoggants andstabilizers each used alone or in combination include thiazolium saltsdescribed in Brooker et al. U.S. Pat. No. 2,131,038 and Allen et al.U.S. Pat. No. 2,694,716; the azaindenes described in Piper U.S. Pat. No.2,886,437 and Heimbach et al. U.S. Pat. No. 2,444,605; the mercury saltsas described in Allen et al. U.S. Pat. No. 2,728,663; the urazolesdescribed in Anderson et al. U.S. Pat. No. 3,287,135; the sulfocatecholsdescribed in Kennard et al. U.S. Pat. No. 3,236,652; the oximesdescribed in Carroll et al. British Pat. No. 623,448; nitron;nitroindazoles; the mercaptotetrazoles described in Kendall et al. U.S.Pat. No. 2,403,927; Kennard et al. U.S. Pat. No. 3,266,897 and Luckey etal. U.S. Pat. No. 3,397,987; the polyvalent metal salts described inJones U.S. Pat. No. 2,839,405; the thiuronium salts described in Herz etal. U.S. Pat. No. 3,220,839; and the palladium, platinum and gold saltsdescribed in Trivelli et al. U.S. Pat. No. 2,566,263 and Yutzy et al.U.S. Pat. No. 2,597,915.

The dye image-providing material associated with each silver halideemulsion layer in this invention can be any material which isnondifi'using in alkaline processing compositions and in photographicsilver halide emulsions but which produces a diffusible dye on reactionwith oxidized silver halide photographic developing agents. Preferablythe dye image-providing material is a nondiffusible coupler whichproduces a diffusible dye on reaction with oxidized aromatic primaryamino color developing agents such as p-phenylenediamine developingagents. Such nondiffusible couplers may be employed in layerarrangements in a photosensitive element which have advantages overother dye image-providing materials. For example, in a system employingan initially soluble and diffusible dye image-providing material such asa dye developer, unless the dye developer is chromatically shifted(which is a technically difi'icult task to obtain three such compoundswhich will not absorb blue, green and red light, respectively, duringexposure, and which will form yellow, magenta and cyan dyes,respectively, after transfer), it will usually have to be employed in alayer underneath a contiguous photosensitive silver halide emulsionlayer with respect to the exposure side so that exposure and diffusionof unoxidized dye developer take place in opposite directions in orderto obtain optimum photographic speed and monitoring of the dye developerlayer by the exposed silver halide emulsion layer. if the dye developerlayer were not underneath its contiguous photosensitive silver halideemulsion layer with respect to the exposure side, then it would act as afilter layer which would decrease photographic speed and therefore wouldbe undesirable. By employing nondiffusible couplers as the dyeimage-providing material, exposure and diffusion of the diffusible dyewhich is produced can take place in the same direction which provides aright-reading image on the image-receiving layer without the need for animage-reversing optical system or a stripping step to reverse the image.These advantages can be seen by comparing various embodiments of theinvention described herein with typical integral systems which employinitially soluble and diffusible dye imageproviding materials, such asdye developers, as described in US. Pat. Nos. 3,415,644; 3,415,645;3,415,646; 3,473,925; Belgian Pat. No. 732,985 (corresponding to RogersU.S. application Ser. Nos. 728,535 filed May l3, 1968 now abandoned and815,585 filed Apr. 14, 1969 now abandoned); and US. Pat. No. 2,983,606,column 24, lines 5773.

A system employing the nondiffusible couplers described herein also hasmany advantages over systems employing initially diffusible couplers.For example, it is not possible to obtain good color separation in aninitially diffusible coupler system unless separate receiving sheets areassembled in register as described in US. Pat. No. 2,647,049 and2,698,798, column 13, lines 64-85 or unless sequential transfers aremade to a single receiver as described in U.S. Pat. No. 2,698,798,column 14, lines l-l2. These such systems, obviously, cannot be employedwith a single developing composition and a single receiver as describedby the invention herein toprovide a high quality, multicolor, transferimage having good color separa tion and low D,,,,,,. in addition,initially diffusible coupler systems require the use of an oxidizingagent in the receiving layer to oxidize the transferred color developingagent which would tend to degrade the multicolor image or wander intoother layers of the integral element causing color contamination.

The nondiffusible couplers of this invention include those havingformulas:

DYE-LlNl(--(COUPBALL),, and

BALLLlNl(-(COUP-SOL),, wherein I. DYE is a dye radical exhibitingselective absorption in the visible spectrum and containing an acidicsolubilizing radical;

2. LlNK is a connecting radical such as an azo radical, a mercuriradical, an oxy radical, an alkylidene radical, a thio radical, a dithioradical or an azoxy radical;

3. COUP is a coupler radical such as a S-pyrazolone coupler radical, apyrazolotriazole coupler radical, a phenolic coupler radical or anopen-chain ketomethylene coupler radical, COUP being substituted in thecoupling position with LlNK;

4. BALL is a photographically inert organic ballasting radi' cal of suchmolecular size and configuration as to render such coupler nohdiffusibleduring development in the alkaline processing composition;

5. SOL is a hydrogen atom or an acidic solubilizing group when the colordeveloping agent contains an acidic solubilizing group, and SOL is anacidic solubilizing group when the color developing agent is free of anacidic solubilizing group; and

6. n is an integer of l to 2 when L1Nl( is an alkylidene radical, and nis 1 when LINK is an azo radical, a mercuri radical, an oxy radical, athio radical, a dithio radical or an azoxy radical.

The acidic solubilizing radicals attached to the diffusible dyeproducing couplers described above can be solubilizing radicals whichwhen attached to the coupler or developer moieties of the dyes, renderthe dyes diffusible in alkaline processing compositions. Typical of suchradicals are carboxylic, sulfonic, ionizable sulfonamide, andhydroxy-substituted groups that lend to dyes negative charges.

The nature of the ballast groups in the diffusible dyeproducing couplercompounds described above (BALL) is not critical as long as they confernondiffusibility to the coupler compounds. Typical ballast groupsinclude long chain alkyl radicals linked directly or indirectly to thecoupler molecules as well as aromatic radicals of the benzene andnaphthalene series. etc., linked directly or indirectly to the couplermolecules by a splittable linkage, or by a removable or irremovable butotherwise nonfunctional linkage depending upon the nature of the couplercompound. Useful ballast groups have at least eight carbon atoms.

Typical dye radical substituents (DYE) include azo, azomethine,indoaniline, indophenol, anthraquinone and related dye radicals wellknown in the art that exhibit selective absorption in the visiblespectrum. The dye radicals contain acidic solubilizing moieties.

With regard to the above-described coupler radicals (COUP), the couplingposition" is well known to those skilled in the photographic art. TheS-pyrazolone coupler radicals couple at the carbon atom in the4-position, the phenolic coupler radicals, including ot-naphthols,couple at the carbon atom in the 4-position and the open-chainketomethylene coupler radicals couple to the carbon atom forming themethylene moiety (e.g.,

* denoting the coupling position). Pyrazolotriazole couplers and theircoupling position are described, for example, in US. Pat. No. 3,061,432and US. application Ser. No. 778,329 of Bailey et al., filed Nov. 22,i968.

Particularly good results are obtained when the cyanproducing couplerhas the formula BALL-OCYANCOUP, the magenta-producing coupler has theformula BALL-l l= N-MAGCOUP and the yellow-producing coupler has theformula BALL-O-YELLCOUP wherein:

a. BALL is a photographically inert organic ballasting radical having atleast eight carbon atoms and of such molecular size and configuration asto render the coupler nondiffusible during development in an alkalineprocessing composition;

b. CYANCOUP is a phenolic coupler radical substituted in the 2-positionwith a fully substituted amido group and at tached to the O moiety ofthe cyan-producing coupler in the coupling position;

c. MAGCOUP is a S-pyrazolone coupler radical joined to the -N=N- moietyof the magenta-producing coupler in the coupling position; and

cl. YELLCOUP is an open-chain ketomethylene coupler radical attached tothe O moiety of the yellowproducing coupler in the coupling position.

The term nondiffusing used herein as applied to the couplers, has themeaning commonly applied to the term in color photography and denotesmaterials which for all practical purposes do not migrate or wanderthrough organic colloid layers, such as gelatin, comprising thesensitive elements of the invention. The same meaning is to be attachedto the term immobile.

The term diffusible" as applied to the dyes formed from thenondiffusing" couplers in this invention has the converse meaning anddenotes materials having the property of diffusing effectively throughthe colloid layers of the sensitive elements in the presence of thenondiffusing" materials from which they are derived. Mobile" has thesame meaning.

When the couplers having the formula DYELINK (COUP-BALL), as describedabove are reacted with oxidized color developing agent, the connectingradical (LINK) is split and a diffusible preformed dye (DYE) is releasedwhich diffuses imagewise to a reception layer. An acidic solubilizinggroup on the preformed dye lends diffusibility to the dye molecule. Thecoupling portion of the coupler (COUP) couples with the color developingagent oxidation product to form a dye that is nondiffusible because ofthe attached ballasting group (BALL) in a noncoupling position. In thistype of coupler, the color of the difiusible dye is determined by thecolor of the preformed dye moiety (DYE), the color of the reactionproduct of color developer oxidation product and the coupler moiety(COUP) being unimportant to the color of the diffusible image.

When couplers having the formula BALL-LINK- (COUP-SOL), as describedabove are reacted with oxidized color developing agent, the connectingradical (LINK) is split and a diffusible dye is formed with the colordeveloping agent oxidation product and the coupling portion (COUP) ofthe coupler which diffuses imagewise to a reception layer. Diffusibilityis imparted to the dye by an acidic solubilizing group attached to anoncoupling position of the coupling portion (COUP) of the coupler or tothe color developing agent. The ballasting portion of the couplerremains immobile. In this type of coupler, the color of the diffusibledye is determined by the color of the reaction product of colordeveloper oxidation product and the coupler moiety (COUP).

In using both types of couplers in the invention, the production ofdiffusible dye images is a function of the reduction of developablesilver halide images which may involve direct or reversal development ofthe silver halide emulsions with an aromatic primary amino developingagent. If the silver halide emulsion employed is a direct positivesilver halide emulsion, such as an internal image emulsion or asolarizing emulsion, which is developable in unexposed areas, a positiveimage can be obtained in the receiver portion of the film unit. In thisembodiment, the nondiffusible coupler can be located in the silverhalide emulsion itself. After exposure of the film unit, the alkalineprocessing composition permeates the various layers to initiatedevelopment of the exposed photosensitive silver halide emulsion layers.The aromatic primary amino color developing agent present in the filmunit develops each of the silver halide emulsion layers in the unexposedareas (since the silver halide emulsions are direct positive ones), thuscausing the developing agent to become oxidized imagewise correspondingto the unexposed areas of the direct positive silver halide emulsionlayers. The oxidized developing agent then reacts with the nondiffusiblecoupler present in each silver halide emulsion layer to form imagewisedistributions, respectively, of diffusible cyan, magenta and yellow dyeas a function of the imagewise exposure of each of the silver halideemulsion layers. At least a portion of the imagewise distributions ofditfusible cyan, magenta and yellow dye diffuse to the image-receivinglayer to provide a positive dye image viewable through the transparentsupport. After being contacted by the alkaline processing composition, apH-lowering layer in the film unit lowers the pH of the film unit tostabilize it. Since the receiving layer does not have to be strippedaway from the negative portion of the film unit, the composite structurecan be maintained intact subsequent to processing. Specific examples ofsuch nondiffusing couplers and other details concerning this type ofphotographic chemistry are found in U.S. Pat. Nos. 3,227,550 and3,227,552.

Internal image silver halide emulsions useful in the abovedescribedembodiment are direct positive emulsions that form latent imagespredominantly inside the silver halide grains, as distinguished fromsilver halide grains that form latent images predominantly on thesurface thereof. Such internal image emulsions were described by Daveyet al. in U.S. Pat. No. 2,592,250 issued Apr. 8, 1952, and elsewhere inthe literature. Internal image silver halide emulsions can be defined interms of the increased maximum density obtained when developed withinternal-type" developers over that obtained when developed withsurface-type developers. Suitable internal image emulsions are thosewhich, when measured according to normal photographic techniques bycoating a test portion of the silver halide emulsion on a transparentsupport, exposing to a light intensity scale having a fixed time between0.01 and 1 second, and developing for 3 minutes at 20 C. in Developer Abelow (internal-type" developer), have a maximum density at least fivetimes the maximum density obtained when an equally exposed silver halideemulsion is developed for 4 minutes at 20 C. in Developer 8 describedbelow (surfacetype developer).

DEVELOPER A Hydroquinone l5 g. Monomcthyl-p-aminophenol sulfate I5 g.Sodium sulfitc (desiccated) 50 5. Potassium bromide l0 g. Sodiumhydroxide 25 g. Sodium thiosulfate 20 Water to make 1 liter.

DEVELOPER B P-hydroxyplienylglycinc 10 Sodium carbonate g.

Water to make I liter The solarizing direct positive silver halideemulsions useful in the above-described embodiment are well-known silverhalide emulsions which have been effectively fogged either chemically orby radiation to a point which corresponds approximately to the maximumdensity of the reversal curve as shown by Mees, The Theory of thePhotographic Process, published by the MacMillan Co., New York, N.Y.,1942, pages 261-297. Typical methods for the preparation of solarizingemulsions are shown by Groves British Pat. No. 443,245, Feb. 25, 1936,who subjected emulsions to Roentgen rays until an emulsion layer formedtherefrom, when developed without preliminary exposure, is blackened upto the apex of its graduation curve; Szaz British Pat. No. 462,730, Mar.15, 1937, the use of either light or chemicals such as silver nitrate,organic sulfur compounds and dyes to convert ordinary silver halideemulsions to solarizing direct positive emulsions; and Arens U.S. Pat.No. 2,005,837, June 25, 1935, the use of silver nitrate and othercompounds in conjunction with heat to effect solarization. Kendall andHill U.S. Pat. No. 2,541,472, Feb. 13, 1951, shows useful solarizedemulsions particularly susceptible to exposure with long wavelengthlight and initial development to produce the Herschel effect describedby Mees above, produced by adding benzothiazoles and other compounds tothe emulsions which are fogged either chemically or with white light. Inusing the emulsions a sufficient reversal image exposure is employedusing minus blue light of from about 500-700 my. wavelength preferably520-554 mu, to substantially destroy the latent image in the silverhalide grains in the region of the image exposure. Particularly usefulare the fogged direct positive emulsions of Berriman U.S. Pat. No.3,367,778 and French Pat. No. 1,520,821.

Internal image silver halide emulsions which contain or which areprocessed in the presence of fogging or nucleating agents areparticularly useful in the above-described embodiment employingnondiffusible couplers since the use of fogging agents is a convehientway to inject electrons into the silver halide grains. Suitable foggingagents include the hydrazines disclosed in Ives U.S. Pat. No. 2,588,982issued Mar. H, 1952 and No. 2,563,785 issuedAug. 7, i; the hydrazidesand hydrazones disclosed in Whitmore U.S. Pat. No. 3,227,552 issued Jan.4, i966; hydrazone quaternary salts described in Lincoln and l-Ieseltineapplication Ser. No. 828,064 filed Apr. 28,- l969, now abandoned; ormixtures thereof. The quantity of fogging agent employed can be widelyvaried depending upon the results desired. Generally, the conccntrationof fogging agent is from about I to about 20 mg.

per square foot of photosensitive layer in the photosensitive element orfrom about 0.1 to about 2 grams per liter of developer if it is locatedin the developer.

Another embodiment of the invention employing the nondiffusible couplersdescribed above to produce a diffusible dye image-providing material isto employ them in combination with development inhibitor-releasingcouplers as described in U.S. Pat. No. 3,227,551. In such an embodiment,the photosensitive portion of the photosensitive element would compriseat least two Color-Forming Units in layers sensitive to differentregions of the visible spectrum, separated by a barrier layer comprisinga hydrophilic colloid containing a waterinsoluble reactant capable offorming a water insoluble salt with mercaptans, each of theColor-Forming Units comprismg:

l. a developable emulsion layer of a hydrophilic colloid and a waterinsoluble metal salt which is developable by an aromatic primary aminocolor developing agent to substantial density without exposure to light,the metal salt having contiguous thereto the nondifiusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to form a diffusible dye; and

2. a photosensitive silver halide emulsion layer, the silver halide ofwhich has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto the adjacent developable emulsion layer to inhibit developmenttherein.

The aromatic primary amino color developing agent is preferably ap-phenylenediamine developing agent which is present in the alkalineprocessing composition and the developable emulsion is preferably anemulsion of a hydrophilic colloid, silver thiocyanate and physicaldevelopment nuclei that can be developed to substantial density withoutexposure to light. The developable emulsion can also be made from ametal salt which is made spontaneously developable by incorporating inthe emulsion a wide variety of well-known physical development nuclei asdisclosed in the above-men tioned U.S. Pat. No. 3,227,551, column 6,lines 63-75 and column 7, lines 1-10. Another method that can beutilized to make the water-insoluble salts spontaneously developable isby prefogging the emulsion with light or with chemical reducing agentssuch as alkali metal borohydrides and the like in accordance withwell-known photographic fogging techniques.

The development inhibitor-releasing couplers which can be employed inthe above embodiment are those having the formula:

(BALL-COUP),,LINKMERC (BALL),,,-COUPS-RAD wherein:

1. BALL is a photographically inert organic ballasting radical of suchmolecular size and configuration as to render the coupler nondiffusibleduring development in the alkaline processing composition;

2. COUP is a coupler radical such as a S-pyraaolone coupler radical, aphenolic coupler radical or an open-chain ketomethylene coupler radical,COUP being substituted in the coupling position with said LINK;

LINK is a connecting radical such as an azo radical, a

mercuri radical, an oxy radical, an alkylidene radical, a

thio radical, a dithio radical or an azoxy radical;

4. MERC is a diffusible radical containing a mercapto radical (-Sl-l);

5. RM) is a photographically inert, diffusible radical that forms amercaptan with the monothio connecting or linking radical (-S-);

6. n is an integer of l to 2 when LINK is an alkylidene radical and n isI when LINK is an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical or an azoxy radical; and

7. m is an integer of or I.

ill

A wide variety of photographically inert radicals that are diifusible inthe layers of the Color-Forming Unit and form mercaptans with themonothio connecting or linkage radical when the connecting is split ondevelopment can be used for the RAD substituent of the developmentinhibitor-releasing couplers. Typical of such radicals are aryl, alkaryland carboncontaining heterocyclic radicals. The aryl moiety of suchradi' cals is preferably phenyl, and includes such substituents asnitro, lower alkyl, lower alkylamido, lower alkoxy, loweralkylsulfoamido, lower alkylcarbamyl, carbon-containing heterocyclicradicals and the like. The carbon-containing heterocyclic radicals,which can be attached directly to the monothio linkage radical or as asubstituent on the described aryl moieties, generally contain at leastone hetero nitrogen, oxygen or sulfur atom, and preferably, one to fourhetero nitrogen atoms. The hetero nitrogen atoms in the heterocyclicradicals have no hydrogen atom attached thereto as the RAD radical isphotographically inert. Illustrative carbon-containing heterocyclicradicals include l-phenyltetrazolyls, oxazolyls, oxadiazolyls,diazolyls, thiadiazolyls, benzoxazolyls, benzothiazolyls, pyrimidyls,pyridinyls, quinolinyls and the like.

MERC is a preformed mercapto development inhibiting moiety. A widevariety of diffusible radicals containing a mercapto radical (-SH) canbe used for the MERC substituent of the development inhibitor-releasingcouplers. The mercapto radical can be suitably attached to an aryl,alkaryl or a carboncontaining heterocyclic radical such as RAD describedabove except that it is not necessary that the hetero nitrogen atoms onthe heterocyclic radicals be free of hydrogen atoms.

When development inhibitor-releasing couplers having the formula(BALLCOUP),,LINI(MERC are reacted with oxidized color developing agent,the connecting radical (LINK) is split and a mercaptan developmentinhibitor (MERC) is released that is diffusible in the Color-FormingUnit. A ballasted or immobile dye is formed by reacting the couplermoiety (COUP) at the coupling position with oxidized color developingagent. The connecting radical (LINK) is preferably an azo (N =N-) or amonothio (-S) radical in this type of development inhibitor-releasingcoupler. As such development inhibitor-releasing couplers are preformeddevelopment inhibitors, they are preferably utilized in a layer adjacentto the light-sensitive silver halide emulsion layer of the presentColor-Forming Units.

When development inhibitor-releasing couplers having the formula(BALL),,,COUPSRAD are reacted with oxidized color developing agent, thethio connecting or linkage radical (S) is split from the couplingposition of the coupler moiety (OOUP) and a mercaptan developmentinhibitor is formed that is diffusible in the Color-Forming Unit. When mis one, a ballasted or immobile dye is formed by reacting the couplermoiety (COUP) at the coupling position with oxidized color developingagent. When m is zero, a nondiffusible or a nonmordantable dye is formedby reacting the coupler moiety (COUP) at the coupling position withoxidized color developing agent, both the developmentinhibitor-releasing coupler and the color developing agent being free ofacidic solubilizing groups when m is zero and the dye formed isdiffusible. The substituent m is preferably one, and such developmentinhibitor'relcasing couplers can be utilized either in thelight-sensitive emulsion or in a layer adjacent thereto in the presentColor-Forming Units.

The nature of the ballast groups (BALL) in the developmentinhibitor-releasing coupler compounds described above is not critical aslong as they confer nondiffusibility to the coupler compounds. Typicalballast groups include long-chain alltyl radicals or several short chainalky'l radicals having e.g., 8-22 carbon atoms, linked directly orindirectly to the coupler molecules, as well as aromatic radicals of thebenzene and naphthalene series, etc., linked directly or indirectly tothe coupler molecules by splittable linkage, or by a removable orirremovable but otherwise nonfunctional linkage depending upon thenature of the coupler compound. Useful ballast groups generally have atleast eight carbon atoms,

liil

in a color diffusion transfer system employing the abovedescribeddevelopment inhibitor-releasing couplers and nondiffusible couplers, theColor-Forming Units are sensitive to blue, green and red light and arecapable of forming imagewise distributions of diffusible yellow, magentaand cyan dyes. After exposure of the film unit, the alkaline processingcomposition permeates the various layers to initiate development of thelatent image contained in each photosensitive silver halide emulsionlayer. The aromatic primary amino color developing agent present in thefilm unit, preferably in the alkaline processing composition itself,develops each of the exposed silver halide emulsion layers, thus causingsaid aromatic primary amino color developing agent to become oxidizedimagewise. The oxidized developing agent then reacts with thenondiffusible development inhibitor-releasing coupler contiguous to thesilver halide emulsion layer to release a diffusible mercaptandevelopment inhibitor. The mercaptan development inhibitor thereafterdiffuses imagewise to each adjacent developable emulsion layer toinhibit development therein corresponding to areas of exposure of thephotosensitive silver halide emulsion, the barrier layers preventing themercaptan development inhibitor formed in one Color-Forming Unit fromdiffusing to another Color-Forming Unit by forming an insoluble saltwith mercaptans diffusing to said barrier layers. The remaining areas ofeach developable emulsion layer wherein development has not beeninhibited corresponding to the unexposed areas of the photosensitivesilver halide emulsion, are thus developed spontaneously by thedeveloping agent, thus causing the developing agent to become oxidized.The oxidized developing agent then reacts with the nondiffusible couplercontiguous to the metal salt in each developable emulsion layer to formimagewise distributions, respectively, of diffusible cyan, magenta andyellow dye as a function of the imagewise exposure of each silver halideemulsion layer. At least a portion of the imagewise distributions ofdiffusible cyan, magenta and yellow dye then diffuse to theimage-receiving layer to provide a positive dye image viewable throughthe transparent support. After being contacted by the alkalineprocessing composition, a pl-i-lowering layer in the film unit lowersthe pH of the film unit to stabilize it. Since the receiving layer doesnot have to be stripped away from the negative portion of the film unit,the composite structure can be maintained intact subsequent toprocessing.

The barrier layers referred to above are used between Color'Forming Unitto ensure that the activity of the mercaptan development inhibitor isconfined to a single Color-Forming Unitv Hence, the barrier layerscontain a water-insoluble salt or metal capable of forming awater-insoluble salt with mercaptans, silver halides such as silverchloride, silver bromide, silver iodide, silver bromoiodide, silverchlorobromoiodide, etc., heing'preferably used. Other compounds suitablefor use include colloidal metals such as silver and gold; and colloidalmetal sulfides, selenides and tellurides such as lead sulfide, nickelsulfide, cadmium sulfide, silver sulfide, copper sulfide, zinc sulfide,mercury sulfide, silver selenide, silver telluride and the like. Thebarrier layers containing light-sensitive silver salts are prepared tobe substantially less sensitive to light than the light-sensitiveemulsions in the Color-Forming Units. Such barrier layers also serve toprevent oxidized color developing agent from wandering from oneColor-Forming Unit to another where it could cause color contamination.Antioxidants such as n-octadecyl hydroquinone and the like phenolicantioxidants, and nondiffusible photographic color couplers that formnondiffusible dyes on coupling with oxidized aromatic primary aminocolor developing agents can be utilized in the barrier layers to preventwandering of such oxidized color developing agent.

Specific examples of the above-described mercaptan developmentinhibitor-releasing couplers and other details concerning this type ofphotographic chemistry are found in the above-mentioned US. Pat. No.3,227,551.

Still another embodiment of the invention employing the nondiffusiblecouplers described above to produce a diffusible dye image-providingmaterial is to employ them in combination with physical developmentnuclei in a nuclei layer contiguous to each photosensitive silver halideemulsion layer. The film unit contains a silver halide solvent,preferably in a rupturable container with the alkaline processingcomposition, and each photosensitive silver halide emulsion layercontains an immobilizing coupler, e.g., a coupler with a ballast group,which is capable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product. Each photosensitive silverhalide emulsion layer and its contiguous nuclei layer are separated fromthe other silver halide emulsions and their contiguous nuclei layers inthe film unit by means of an alkaline solution-permeable barrier layerfor retaining silver complexes. After exposure of the film unit, thealkaline processing composition permeates the various layers to initiatedevelopment of the latent image contained in each photosensitive silverhalide emulsion layer. The aromatic primary amino color developing agentpresent in the film unit develops each of the exposed silver halideemulsion layers, thus causing the aromatic primary amino colordeveloping agent to become oxidized imagewise. The oxidized developingagent then reacts with the immobilizing coupler present in each saidphotosensitive silver halide emulsion layer to form an immobile product.The remaining silver halide in each silver halide emulsion layercorresponding to unexposed and thus underdeveloped areas forms a solublesilver ion complex with the silver halide solvent present in oractivated by the processing composition and migrates to each adjacentnuclei layer. The transferred silver complex is reduced or physicallydeveloped in the nuclei layer, thus causing the developing agent tobecome oxidized. The oxidized developing agent then reacts with thenondiffusible coupler present in each nuclei layer to form imagewisedistributions, respectively, of diffusible cyan, magenta and yellow dyeas a function of the imagewise exposure of each said silver halideemulsion layer. The diffusible dye can be formed by the reaction of theox idized developing agent with the nondiffusible coupler or a preformeddye can be released by the reaction of the oxidized developing agentwith the nondiffusible coupler, as described above. At least a portionof said imagewise distributions of diffusible cyan, magenta and yellowdyes then diffuse to the image-receiving layer to provide a positive dyeimage viewable through the transparent support. After being contacted bythe alkaline processing composition, a pH-lowering layer in the filmunit lowers the pH of the film unit to stabilize it. Since the receivinglayer does not have to be stripped away from the negative portion of thefilm unit, the composite structure can be maintained intact subsequentto processing.

In the above-described embodiment, the aromatic primary amino colordeveloping agent is preferably a p-phenylenediamine developing agentwhich is present in the alkaline processing composition. The physicaldevelopment nuclei can be any of those well known to those in the artsuch as colloidal metals, e.g., colloidal silver, gold, platinum,palladium, colloidal metal sulfides, e.g., colloidal silver sulfide,zinc sulfide, etc, Materials which form physical development nuclei mayalso be used such as reducing agents and labile sulfur compounds. Thenuclei layer can also be split into two layers, one on each side of thephotosensitive silver halide emulsion layer, if desired. The silverhalide solvent employed can be any of those well known to those skilledin the art, such as alkali metal and ammonium thiosulfates andthiocyanates, e.g., sodium thiosulfate, ammonium thiosulfate, ammoniumthiocyanate, potassium thiocyanate, etc., and may be incorporated in aseparate layer, if desired, either in the photosensitive element or inthe opaque process sheet. Spacer layers comprising gelatin arepreferably employed between the nuclei layers and the photosensitivesilver halide emulsion layers to prevent undesirable mixing of the twolayers upon coating. The spacer layers may also contain nuclei andnondiffusible coupler capable of reacting with oxidized color developingagent to form an immobile product in order to increase its efficiency.Other details concerning this type of photographic chemistry are foundin British Pat. No. 904,364, page 19, lines l-4I.

In the above-described embodiments employing nondiffusible couplers,interlayers are generally employed between the various photosensitiveColor-Forming Units to scavenge oxidized developing agent and prevent itfrom forming an unwanted dye in another Color-Forming Unit. Suchinterlayers would generally comprise a hydrophilic polymer such asgelatin and an immobilizing coupler, as described above, which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product. Such interlayers may alsoscavenge other materials such as soluble silver ion complexes ormercaptans in the described systems to prevent such materials fromcontaminating other Color-Forming Units. A developer scavenginginterlayer may also be employed in the above-described embodimentsadjacent to the support carrying the photosensitive layers to preventexcess color developing agent from staining the image-receiving layer.Such a layer may comprise for exam ple, a fogged silver halide emulsion,or a spontaneously developable silver halide emulsion, physicaldevelopment nuclei, and a nondiffusible coupler capable of reacting withoxidized color developing agent to form an immobile product. Thedeveloper scavenger interlayer may also contain a waterinsolublereactant capable of forming a water-insoluble salt with mercaptans, etc.The developer scavenger interlayer may also be coated with a polymerictiming layer, e.g., gelatin, if desired, to allow for completedevelopment before the developer scavenger interlayer becomes operative.

As previously mentioned, the aromatic primary amino color developingagent employed in the above-described embodiments is preferably presentin the alkaline processing composition in the rupturable pod. The colordeveloping agent can also be incorporated into the negative portion ofthe film unit as a separate layer, e.g., by employing a Schiff basederivative of an aromatic primary amino color developing agent such asthat formed by reacting o-sulfobenzaldehyde and N,N-diethyl-3-methyI-4-aminoaniline. Such incorporated developing agent will beactivated by the alkaline processing composition. While the incorporateddeveloping agent can be positioned in any layer of the photosensitiveelement from which it can be readily made available for development uponactivation with alkaline processing composition, it is generally eitherincorporated in the light-sensitive silver halide emulsion layers or inlayers contiguous thereto. As mentioned above, aromatic primary aminocolor developing agents employed in this invention are preferablyp-phenylenediamine developing agents. These developing agents are wellknown to those skilled in the art and include4-amino-N,N-diethyl-S-methyl aniline hydrochlorideN,N-diethyl-p-phenylenediamine, 2amino-5- diethylamino toluene,N-ethyl-/3-methane-sulfonamido-ethyl- 3-methyl-4-aminoaniline,4-amino-N-ethyl-3-methyl-N-(B- sulfoethyl)aniline,4-amino-N-ethyl-3-methoxyN-(B-sulfoethyl)aniline,4-amino-N-ethyl-N-(B-hydroxyethyl)aniline,4-amino-N,l-l-diethyl-S-hydroxymethyl aniline, 4amino-N-methyl-N-(B-carboxyethyl)aniline,4-amino-N,l\I-bis(fihydroxyethyl)aniline,4-amino-N,N-bis(fl-hydroxyethyl)-3 methyl aniline,3-acetamido-4-aminoN,N-bis(B-hydrox yethyl)aniline,4-amino-N-ethyl-N-(2,3,dihydroxypropyl)-3- methyl aniline sulfate salt,4-amino-N,N-diethyl-3-(3-hydroxypropoxy)aniline, and the like.

In the drawings, various embodiments of the film unit of the inventionare shown with the various elements greatly magnified for purposes ofillustration only and wherein like number appearing in the variousfigures refer to the like components.

In FIG. I, rupturable containers II and I3 are positioned transverse aleading edge of the photosensitive laminate and are held in place bybinding means 30, which can be a pressure-sensitive tape, which enclosesthat edge of the laminate. The other edges of the photosensitivelaminate are similarly enclosed with binding means 3K, 32 and 33 whichenhance the structural integrity of the laminate and prevent leakage ofprocessing solution during and after photographic processing whenrupturable containers Ill and 13 are broken open by pressure-applyingmembers 36 to discharge their contents into the photosensitive laminate.

In FIG. 2, film unit It) comprises a first rupturable container Illcontaining, prior to passing between pressure-applying members 36, analkaline processing composition containing an opacifying agent,rupturable container 13 containing an opacifying composition, and aphotosensitive laminate comprising top transparent sheet 29 coated withpolymeric acid layer 23 and polymeric timing layer 27 and aphotosensitive element comprising transparent support layer coated withan image-receiving layer 16, permeable support 118, cyan dyeimage-providing layer 19, red-sensitive silver halide emulsion layer 20,barrier interlayer 2i, magenta dye image-providing layer 22,green-sensitive silver halide emulsion layer 23, barrier interlayer 24,yellow dye image-providing layer 25 and blue-sensitive silver halideemulsion lay-er 26. Exposure of the film unit takes place through thetop transparent sheet 29 which is preferably an actinic radiationtransmissive flexible sheet material.

In FIG. 3, the film unit of FIG. 2 has: been passed betweenpressure-applying members 36 such as would be found in a camera, thuscausing rupturable containers 11 and I3 to collapse. The alkalineprocessing composition containing an opacifying agent is discharged fromcontainer Ill between the polymeric timing layer 27 and theblue-sensitive silver halide emulsion layer 26 while the opacifyingcomposition is discharged between the permeable support 18 and theimagereceiving layer 16. After development and image transfer has takenplace, a positive, right-reading image may be viewed through transparentsupport 115.

FIG. 4, FIG. 5 and FIG. 6 illustrate other embodiments of the film unitof my invention. The embodiment of FIG. 4i is similar to the embodimentof FIG. 2 with the exception that the alkaline processing composition iscontained in the second or lower rupturable container and thephotosensitive layer arrangement has been reversed to facilitateexposure from the bottom rather than the top side of the film unit.

The embodiment illustrated in FIG. 5 is similar to the embodiment shownin FIG. 2 with the exception that it contains opaque reflective layer 17between the permeable support I8 and image-receiving layer 16 and thefirst or upper rupturable container contains an opacifying compositionwhile the second or lower rupturable container contains the alkalineprocessing composition. As in FIG. 2, exposure in FIG. 5 takes placefrom the top side and the transferred positive image is viewed from thebottom side.

FIG. 6 illustrates still another embodiment similar to FIG. 2 with theexception that the top transparent sheet is replaced by opaque layer 36,the first or upper rupturable container does not contain any opacifyingagent and the photosensitive layer arrangement has been reversed tofacilitate exposure from the bottom rather than the top side of the filmunit.

While FIGS. 2-6 indicate that the two rupturable containers areseparated from each other, this is done merely for purposes ofillustration. Since the layers in the film unit are actually very thin,the two rupturable containers in actual practice are superimposed oneach other. If desired, one processing container with two compartments,such as that shown in FIG. 2 of US. Pat. No. 3,473,925, may be employedin my invention. In that case, each compartment would serve as arupturable container and this feature is within the scope of myinvention.

Due to the particular chemistry of the image-producing materialsdescribed herein, various embodiments of the film unit of my inventioncan be interchangeably employed in cameras with different opticalsystems which is not feasible with other types of image-providingmaterials. For example, if the photosensitive layers in either FIG. 2 orFIG. 4 are replaced by a pan-sensitized silver halide emulsion having adye image'providing material associated therewith as describedpreviously or having three such dye image-providing materials associatedtherewith as described in copending U.S. application Ser. No. 58,195 ofWalter M. Bush filed of even date herewith for black-and-whitereproduction, the film unit could be exposed from either the top side orthe bottom side to provide a transferred positive image. Such a filmunit could thus be employed in a camera similar to that illustrated inU.S. Pat. No. 3,447,437 with an imagereversing optical system (exposurefrom the bottom side) or in a similar camera without the image-reversingoptical system (exposure from the top side) to provide a rightreading,positive image in the image-receiving layer which would be viewablethrough the transparent support.

In a multicolor system, the embodiments illustrated in FIG. 4 and FIG. 6could be employed in a camera similar to that illustrated in U.S. Pat.No. 3,447,437 with an image-reversing optical system to provide aright-reading, positive image in the image-receiving layer. By modifyingthe embodiments illustrated in FIG. 4 and FIG. 6 in the mannerillustrated in FIG. 2 and FIG. respectively, the same type of chemistrycan be employed in film units for usein a camera similar to thatillustrated in U.S. Pat. No. 3,447,437 but without an imagereversingoptical system to also provide a right-reading, positive image in theimage-receiving layer.

In the embodiments of my film unit as illustrated in FIG. 5 and FIG. 6,the opacifying composition in one container is separated from thealkaline processing composition which is present in the other container.These embodiments are particularly useful when it is desired to keepthese two components separated from each other, e.g., when the opacifieris present in an unusually high concentration which might interfere withthe diffusion of the alkaline processing composition or when thecomponents might react with each other, etc.

The film unit of my invention may be constructed by assembling thevarious parts in an atmosphere maintained at a pressure lower thanatmospheric pressure and by sealing the top sheet and image-receivingelement to the photosensitive element along their edges in order toprevent the admission of air between them. The exclusion of air betweenthe various sheets and the photosensitive element is desirable in orderto prevent air bubbles from being entrained in the processingcomposition which would form discontinuities in the positive image.Details of this method of assembly and other methods for assuring auniform distribution of processing composition between two sheets aredescribed in Belgian Pat. No. 71 1,897.

The film unit of my invention can also contain a liquid trap at theopposite end in which the processing compositions are introduced inorder to trap any excess processing composition and keep it from beingexpelled from the film unit. The liquid trap may also function to letair escape, if any is present. Such liquid traps are disclosed, forexample, in Belgian Pat. No. 71 1,899.

If it is desired to have residual water in the film unit leave thesystem after processing, this may be accomplished by incorporating intothe film unit a desiccating layer to absorb water or by providing accessto the atmosphere in order to let the water evaporate, e.g., byemploying a water-permeable top sheet or a water-permeable film supportfor the image-receiving layer or by allowing water to evaporate throughthe liquid traps in the film unit as described above, etc.

Rupturable containers 11. and 13 can be of the type disclosed in U.S.Pat. Nos. 2,543,181; 2,634,886; 2,653,732; 2,723,051; 3,056,492;3,056,491 and 3,152,515. In general such containers comprise arectangular sheet of fluid and airimpervious material foldedlongitudinally upon itself to form two walls which are sealed to oneanother along their longitudinal and end margins to form a cavity inwhich processing composition is contained The longitudinal marginalseals are made weaker than the end margin seals so as to become unsealedin response to the hydraulic pressure generated within the fluidcontents of the containers by the application of a compressive force tothe outside walls of the containers.

As illustrated in FIGS. 1 and 2;, containers 11 and 13 are fixedlypositioned and extend transverse a leading edge of the photosensitivelaminate so that a compressive force applied to said containers willeffect a unidirectional discharge of the containers contents into thefilm unit. In FIG. 2, the weak longitudinal marginal seals 35 aredirected towards the interfaces between layers 27 and 26 and betweenlayers 16 and 18 to facilitate this operation.

In FIG. 3, after containers 11 and 13 have been broken open, they can bedetached from the photosensitive laminate along with the upper portionof binding means 30. The end flap of binding means 30 which waspreviously adhered to container 11 may then be folded up over the end ofthe laminate to maintain its structural integrity.

In the performance of a multicolor diffusion transfer process employingthe film unit of FIG. 2, the unit is exposed to radiation incident onthe photosensitive laminates upper surface through transparent sheet 29.Subsequent to exposure, the film unit 10 is processed by passing itbetween pressureapplying members 36 in order to apply compressivepressure to frangible containers II and 13 and to effect rupture ofIongitudinal seals 35 and distribution of alkaline processingcomposition containing an opacifying agent between layers 27 and 26 anddistribution of opacifying composition between layers 16 and 18 of thefilm unit 10. The alkaline processing composition permeates the silverhalide emulsion layers 26, 23 and 20 to initiate development of thelatent images contained therein. Diffusible yellow, magenta and cyan dyeimages are formed from material in layers 25, 22 and 19 as a function ofthe imagewise exposure of their associated emulsions. At least part ofthe imagewise distributions of mobile yellow, magenta and cyan dyestransfer, by diffusion, to the image-receiving layer 16 to provide apositive dye image therein. This positive, right-reading image can thenbe viewed through transparent support layer 15 on the opacifyingcomposition background. Since the receiving layer does not have to bestripped away from the negative portion of the film unit, the compositestructure can be maintained intact subsequent to said processing.

In a color film unit according to the invention, each silver halideemulsion layer containing a dye image-providing material or having thedye image-providing material present in a contiguous layer may beseparated from the other silver halide emulsion layers in the negativeportion of the film unit by materials in addition to those describedabove, including gelatin, calcium alginate, or any of those disclosed inU.S. Pat. No. 3,384,483, polymeric materials such as polyvinylamides asdisclosed in U.S. Pat. No. 3,421,892 or any of those disclosed in U.S.Pat. Nos. 2,992,104; 3,043,692; 3,044,873; 3,061,428; 3,069,263;3,069,264; 3,121,01 1;and 3,427,158.

Generally speaking, except where noted otherwise, the silver halideemulsion layers in the invention comprise photosensitive silver halidedispersed in gelatin and are about 0.6 to 6 microns in thickness; thedye image-providing materials are dispersed in an aqueous alkalinesolution-permeable polymeric binder, such as gelatin, as a separatelayer about I to 7 microns in thickness; and the alkalinesolution-permeable polymeric interlayers, e.g., gelatin, are about 1 to5 microns in thickness. Of course, these thicknesses are approximateonly and can be modified according to the product desired. In additionto gelatin, other suitable hydrophilic materials include both naturallyoccurring substances such as proteins, cellulose derivatives,polysaccharides such as dextran, gum arabic and the like; and syntheticpolymeric substances such as water soluble polyvinyl compounds likepoly(vinylpyrrolidone), acrylamide polymers and the like.

The photographic emulsion layers and other layers of a photographicelement employed in the practice of this invention can also containalone or in combination with hydrophilic, water-permeable colloids,other synthetic polymeric compounds such as dispersed vinyl compoundssuch as in latex form and particularly those which increase thedimensional stability of the photographic materials. Suitable syntheticpolymers include those described, for example, in Nottorf U.S. Pat. No.3,142,568, issued July 28, 1964; White U.S. Pat. No. 3,193,386, issuedJuly 6, 1965; Houck et al. U.S. Pat. No.

3,062,674, issued Nov. 6, 1962; Houck et al. US. Pat. No. 3,220,844,issued Nov. 30, 1965; Ream et al. U.S. Pat. No. 3,287,289, issued Nov.22, 1966; and Dykstra US. Pat. No. 3,411,911, issued Nov. 19, 1968.Particularly effective are water-insoluble polymers of alkyl acrylatesand methacrylates, acrylic acid, sulfoalkyl acrylates or methylacrylate,those which have cross-linking sites which facilitate hardening orcuring, and those having recurring sulfobetaine units as described inDykstra Canadian Pat. No. 774,054.

Any material can be employed as the image-receiving layer in thisinvention as long as the desired function of mordanting or otherwisefixing the dye images will be obtained. The particular material chosenwill, of course, depend upon the dye to be mordanted. If acid dyes areto be mordanted, the imagereceiving layer can contain basic polymericmordants such as polymers of amino guanidine derivatives of vinyl methylketone such as described in the Minsk U.S. Pat. No. 2,882,156 grantedApr. 14, 1959. Other mordants useful in our invention includepoly-4-vinylpyridine, the 2-vinylpyridine polymer metho-p-toluenesulfonate and similar compounds described in Sprague et al. U.S. Pat.No. 2,484,430 granted Oct. 11, [949, and cetyl trimethylammoniumbromide, etc. Effective mordanting compositions are also described inWhitmore US. Pat. No. 3,271,148 and Bush US. Pat. No. 3,271,147. Themordanting compositions described in the Whitmore patent comprise atleast one hydrophilic organic colloid containing a finely divided,uniform dispersion of droplets or globules of a high-boiling,water-immiscible organic solvent in which is dissolved a highconcentration of a cationic, nonpolymeric, organic dye-mordantingcompound for acid dyes. The mordant ing compositions described in theBush patent comprise at least one hydrophilic organic colloid containinga finely divided, uniform dispersion of particles of a salt of anorganic acidic composition containing free acid moieties and atcationic, nonpolymeric organic dye-mordanting compound for acid dyes.Useful cationic or basic organic dye-mordanting compounds for dyesinclude quaternary ammonium and phosphonium, and ternary sulfoniumcompounds in which there is linked to the N, P, or S onium atom at leastone hydrophobic ballast group such as long-chain alkyl or substitutedalkyl groups. Furthermore, the image-receiving layer can be sufficientby itself to mordant the dye as in the case of use of an alkalinesolution-permeable polymeric layer such as N-methoxymethylpolyhexylmethylene adipamide; partially hydrolyzed polyvinyl acetate;polyvinyl alcohol with or without plasticizers; cellulose acetate;gelatin; and other materials of similar nature. Generally, good resultsare obtained when the image-receiving layer, preferably alkalinesolution-permeable, is transparent and about 0.25 to about 0.04 mil inthickness. This thickness, of course, can be modified depending upon theresult desired. The imagereceiving layer can also contain ultravioletabsorbing materials to protect the mordanted dye images from fading dueto ultraviolet light and/or brightening agents such as the stilbenes,coumarins, triazines, oxazoles, etc.

Use of a plH-lowering layer in the film unit of the invention willusually increase the stability of the transferred image. Generally, thepll-l-lowering layer will effect a reduction in the pH of the imagelayer from about 13 to 14 or to at least 1 l and preferably -8 within ashort time after imbibition. For example, polymeric acids as disclosedin U.S. Pat. No. 3,362,819 may be employed. Such polymeric acids reducethe pH of the film unit after development to terminate further dyetransfer and thus stabilize the dye image. Such polymeric acids comprisepolymers containing acid groups, such as carboxylic acid and sulfonicacid groups, which are capable of forming salt with alkali metals, suchas sodium or potassium, or with organic bases, particularly quaternaryammonium bases, such as tetramethyl ammonium hydroxide. The polymers canalso contain potentially acid-yielding groups such as anhydrides orlactones or other groups which are capable of reacting with bases tocapture and retain them. Generally the most useful polymeric acidscontain free carboxyl groups, being insoluble lid in water in the freeacid form and which form water-soluble sodium and/or potassium salts.Examples of such polymeric acids include dibasic acid half-esterderivatives of cellulose which derivatives contain free carboxyl groups,e.g., cellulose acetate hydrogen phthalate, cellulose acetate hydrogenglutarate, cellulose acetate hydrogen succinate, ethyl cellulosehydrogen succinate, ethyl cellulose acetate hydrogen succinate,cellulose acetate succinate hydrogen phthalate; ether and esterderivatives of cellulose modified with sulfoanhydrides, e.g., withortho-sulfobenzoic anhydride; polystyrene sulfonic acid; carboxymethylcellulose; polyvinyl hydrogen phthalate; polyvinyl acetate hydrogenphthalate; polyacrylic acid; acetals of polyvinyl alcohol with carboxyor sulfo substituted aldehydes, e.g., O-, lVlor p-benzaldehyde sulfonicacid orcarboxylic acid; partial esters of ethylene/maleic anhydridecopolymers; partial esters of methyl-vinyl ether/maleic anhydridecopolymers; etc. In addition, solid monomeric acid materials could alsobe used such as palmitic acid, oxalic acid, sebacic acid, hydrocinnamicacid, metanilic acid, paratoluenesulfonic acid and benzenedisulfonicacid. Other suitable materials are disclosed in U.S. Pat. No. 3,422,075,and 2,635,048.

The pH-lowering layer is usually about 0.3 to about 1.5 mils inthickness. Although the pH-lowering layer is usually located in thereceiver portion of the film unit between the support and theimage-receiving layer, it can actually be located anywhere within thefilm unit as long as the desired function is obtained. For example, apolymeric acid layer could be located in the negative portion of thefilm unit, as disclosed in US. Pat. No. 3,362,821, with the polymericacid encapsulated in a polymeric material and dispersed in an alkalinesolutionpermeable binder. In this instance, the processing solutionwould quickly diffuse through the element to permeate the silver halideemulsion layers. After the processing solution has permeated through thepolymeric shell" surrounding the dispersed particles of polymeric acid,the pH of the film unit would then decrease, thus stabilizing the filmunit as a whole. The pH-lowering layer could also be located on the topsheet which is superposed over the photosensitive element of the filmunit of the invention. The alkaline processing composition which isdischarged from a rupturable container would diffuse upward to contactthe pH-lowering layer, become acidic and then diffuse downward into thenegative portion of the photosensitive element, thus lowering the pH ofthe film unit as a whole after development and imagewise diffusion ofthe various dyes have taken place.

An inert timing or spacer layer coated over the pH-lowering layer canalso be used to time" or control the pH reduction of the film unit as afunction of the rate at which the alkali diffuses through the inertspacer layer. Examples of such timing layers include gelatin, polyvinylalcohol or any of those dis closed in US. Pat. No. 3,455,686. The timinglayer is also effective in evening out the various reaction rates over awide range of temperatures, e.g., premature pH reduction is preventedwhen imbibition is effected at temperatures above room temperature, forexample, at to F. The timing layer is usually about 0.1 to about 0.7 milin thickness. Especially good results are obtained when the timing layercomprises a hydrolyzable polymer or a mixture of such polymers which areslowly hydrolyzed by the processing composition. Examples of suchhydrolyzable polymers include polyvinyl acetate, polyamides, polyvinylethers, partial acetate of polyvinyl alcohol, etc.

The alkaline processing composition employed in this invention is theconventional aqueous solution of an alkaline material, e.g., sodiumhydroxide, sodium carbonate or an amine such as diethylamine, preferablypossessing a pH in excess of 12. The solution also preferably contains aviscosity-increasing compound such as a high molecular weight polymer,e.g., a water-soluble ether inert to alkaline solutions such ashydroxyethyl cellulose or alkali metal salts of carboxymethyl cellulosesuch as sodium carboxymethyl cellulose. A concen tration ofviscosity-increasing compound of about 1 to about 5 those disclosed inU.S. Pat. No. 3,039,896 can also be employed. Such auxiliary oraccelerating developing agents can be employed either in the liquidprocessing composition or may be contained, at least in part, in anylayer or layers of the film unit such as the silver halide emulsionlayers, the dye image-providing material layers, interlayers,image-receiving layer, etc.

The alkaline processing composition employed in this invention can alsocontain a desensitizing agent such as methylene blue, nitro-substitutedheterocyclic compounds, 4,4-bi-pyridinium salts, etc., to insure thatthe photosensitive element is not further exposed after it is removedfrom the camera for processing.

While the alkaline processing composition and opacifying compositionused in this invention can be employed in rupturable containers, asdescribed previously, to conveniently facilitate the introduction of thecompositions, into the film unit, other methods of inserting thesecompositions into the film unit could also be employed, e.g.,interjecting such compositions with communicating members similar tohypodermic syringes which are attached either to a camera or cameracartridge.

Any opacifying agent can be employed in the alkaline processingcomposition or as a separate opacifying composition in my invention aslong as it provides the desired opacity to light. Examples of opacifyingagents include carbon black, barium sulfate, zinc oxide, bariumstearate, silver flake, silicates, alumina, zirconium oxide, zirconiumacetyl acetate, sodium zirconium sulfate, kaolin, mica, titaniumdioxide, organic dyes such as the nigrosines, or mixtures thereof inwidely varying amounts depending upon the degree of opacity desired. Ingeneral, the concentration of opacifying agent should be sufficient toprevent further exposure of the film units silver halide emulsion oremulsions by ambient actinic radiation transversing through the filmunit subsequent to distribution of the processing composition andvarious opacifying agents into the film unit. For example, carbon blackor titanium dioxide will provide sufficient opacity when they arepresent in the alkaline processing composition or in a separateopacifying composition in an amount of from about 5 to 40 percent byweight. After the processing solution and various opacifying agents havebeen distributed into the film unit, processing may take place out ofthe camera in the presence of actinic radiation in view of the fact thatthe silver halide emulsion or emulsions of the laminate are surroundedby opaque material. If the illustrated binding tapes are also opaque,edge leakage of actinic radiation incident on the silver halide emulsionor emulsions will also be prevented.

As mentioned above, the opacifying agent can either be employed in thealkaline processing composition or in a separate opacifying composition.When it is employed in a separate opacifying composition, it can beemployed by itself but is preferably dispersed in a film-forming binder,e.g., an alkaline solution-permeable polymeric binder such as polyvinylalcohol, gelatin. etc.

The alkaline solution-permeable, substantially opaque, light-reflectivelayer 17 of FIG. 5 can generally comprise any opacifier dispersed in abinder as long as it has the desired properties. Particularly desirableare white light-reflective layers since they would be estheticallypleasing backgrounds on which to view a transferred dye image and wouldalso possess the optical properties desired for reflection of incidentradiation. Suitable opacifying agents include titanium dioxide, bariumsulfate, zinc oxide, barium stearate, silver flake, silicates, alumina,zirconium oxide, zirconium acetyl acetate, sodium zirconium sulfate,kaolin, mica, or mixtures thereof in widely varying amounts dependingupon the degree of opacity desired. The opacifying agents can bedispersed in any binder such as an alkaline solution-permeable polymericmatrix such as, for example, gelatin, polyvinyl alcohol, and the like.Brightening agents such as the stilbenes, coumarins, triazines andoxazoles can also be added to the light-reflective layer, if desired.When it is desired to increase the opacifying capacity of thelight-reflective layer, dark-colored opacifying agents may be added toit, e.g., carbon black, nigrosine dyes, etc. Another technique toincrease the opacifying capacity of the light-reflective layer is toemploy a separate opaque layer underneath it comprising, e.g., carbonblack, nigrosine dyes, etc., dispersed in an alkaline solution-permeablepolymeric matrix such as, for example, gelatin, polyvinyl alcohol, andthe like. Such an opaque layer would generally have a density of atleast 4 and preferably greater than 7 and would be substantially opaqueto actinic radiation. The opaque layer may also be combined with adeveloper scavenger layer if one is present. The light-reflective andopaque layers are generally I to 6 mils in thickness although they canbe varied depending upon the opacifying agent employed, the degree ofopacity desired, etc.

The opaque layer 36 of FIG. 6 can comprise any opacifying agentdescribed above dispersed in a binder so long as it has the desiredopacity. The opaque layer of FIG. 6 is similar to the opaque layer ofFIG. 5 with the exception that the binding agent does not have to bealkaline solution permeable, i.e., it can be any film-forming polymericmaterial such as polyesters, cellulose esters, polycarbonates, etc.

The transparent sheet in several embodiments of the film assembly of myinvention can be any transparent material as long as it does notdeleteriously effect the photographic properties of the film unit and isdimensionally stable. Typical actinic radiation transmissive flexiblesheet materials include cellulose nitrate film, cellulose acetate film,cellulose acetate butyrate, poly(vinyl acetal) film, polystyrene film,poly(ethyleneterephthalate) film, polycarbonate film, poly-aolefins suchas polyethylene and polypropylene film, and related films or resinousmaterials as well as glass. The transparent sheet is usually about 2 to6 mils in thickness. If desired, an adhesive layer activatable by theprocessing composition may be present on the transparent sheet in orderto increase its adhesion to the photosensitive element after processing.

While the invention has been described with reference to layers ofsilver halide emulsions and dye image-providing materials, dotwisecoating, such as would be obtained using a gravure printing technique,could also be employed. In this technique, small dots of blue, green andred-sensitive emulsions have associated therewith, respectively, dots ofyellow, magenta and cyan color-providing substances. After development,the transferred dyes would tend to fuse together into a continuous tone.

The photographic layers employed in the practice of this invention cancontain surfactants such as saponin, anionic compounds such as the alkylaryl sulfonates described in Baldsiefen U.S. Pat. No. 2,600,831;amphoteric compounds such as those described in Ben-Ezra U.S. Pat. No.3,133,816; and water soluble adducts of glycidol and an alkyl phenolsuch as those described in Olin Mathieson British Pat. No. 1,022,878.

The various layers, including the photographic. layers, employed in thepractice of this invention can contain light-absorbing materials andfilter dyes such as those described in Sawdey U.S. Pat. No. 3,253,921;Gasper U.S. Pat. No. 2,274,782; Silverstein et al. U.S. Pat. No.2,527,583 and Van Campen U.S. Pat. No. 2,956,879. If desired, the dyescan be mordanted, for example, as described in Milton et al. U.S. Pat.No. 3,282,699.

The sensitizing dyes and other addenda used in the practice of thisinvention can be added from water solutions or suitable organic solventsolutions can be used. The compounds can be added using variousprocedures including those described in Collins et al. U.S. Pat. No.2,912,343; McCrossen et a1. U.S. Pat. No. 3,342,605; Audran U.S. Pat.No. 2,996,287 and Johnson et al. U.S. Pat. No. 3,425,835.

The photographic layers used in the practice of this invention can becoated by various coating procedures including dip coating, air knifecoating, curtain coating, or extrusion coating using hoppers of the typedescribed in Beguin U.S. Pat No. 2,681,294. If desired, two or morelayers can be coated simultaneously by the procedures described inRussell U.S. Pat. No. 2,761,791 and Wynn British Pat. No. 837,095. Thisinvention also can be used for silver halide layers coated by vacuumevaporation as described in British Pat. No. 968,453

r and Lu Valle etal. U.S. Pat. No. 3,219,451.

The photographic and other hardenable layers used in the practice ofthis invention can be hardened by various organic or inorganichardeners, alone or in combination, such as the aldehydes, and blockedaldehydes, ltetones, carbocylic and carbonic acid derivatives, sulfonateesters, sulfonyl halides and vinyl sulfonyl esters, active halogencompounds, epoxy compounds, aziridines, active olefins, isocyanates,carbodiimides, mixed function hardeners and polymeric hardeners such asoxidized polysaccharides like dialdehyde starch and oxyguargum and thelike.

The following examples further illustrate the invention:

EXAMPLE 1 (FIG. 2 EMBODIMENT) A photosensitive element is prepared bycoating the following layers in the order recited on an alkalinesolution-permeable polyvinyl alcohol film support:

1. Nuclei layer of cyan image transfer coupler l-hydroxy4-(3-octadecylcarbamylphenylthio)-N-ethyl-3 ',5 -dicarboxy-2-naphthanilide (49 mg./ft. colloidal palladium (0.24 mg./ft. and gelatin(50 mg./ft.

2. Spacer layer of gelatin (100 mg./ft.

3. Red-sensitive gelatin-silver bromide emulsion (110 mg. gelatin/ft.and 70 mg. silver/ft.1-hydroxy-N-[ct-(2,4-ditert-amylphenoxy)butyl]-2-naphthamide (87 mg./ft.and di n-butylphthalate (44 mg./ft.

4. Spacer layer of gelatin 100 mg./ft.

5. Nuclei layer of cyan image transfer coupler l-hydroxy-4-(3octadecylcarbamylphenylthio)-N-ethyl-3,5-dicarboxy-2- naphthanilide(49 mg./ft. colloidal palladium (0.24 mg./ft. and gelatin (50 mg./ft.

6. Barrier lnterlayer of 1-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyl]-2-naphthamide (87 mg./ft. di-n-bu tylphthalate (44 mg./ft. CareyLea Silver 10 mg./ft. colloidal palladium (0.48 mg./ft. and gelatin (12Smg./ft.

7. Nuclei layer of magenta image transfer coupler l'phenyl- 3'( 3 ,5-disulfobenzamido-4-(6-hydroxy4-pentadecylphenylazo)--pyrazolone,dipotassium salt (38 mg./ft. colloidal palladium (0.24 mgjft?) andgelatin (50 mg./ft.

8. Spacer layer of gelatin (100 rng./ft.

9. Green-sensitive gelatin-silver bromide emulsion (1 mg. gelatin/ft and70 mg. silver/ft. 1-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyl]-2-naphthamide (87 mgjft?) anddi-nbutylphthalate (44 mg./ft.

10. Spacer layer ofgelatin (100 mg./ft.

1 1. Nuclei layer of magenta image transfer couplerl-phenyl-3-(3,5-disulfobenzarnido)-4(6-hydroxy-4-pentadecylphenylazo)-5-pyrazolone, dipotassium salt (38mg./ft. colloidal palladium (0.24 ing/ft?) and gelatin (50 ing/ft?) l2.Barrier lnterlayer ofl-hydroxy-N-[a-di-tertamylphenoxy)butyl1-2-naphthamide (87 mg./ft.di-n-butylphthalate (44 mg./ft. Carey Lea Silver l0 mg./ft. colloidalpalladium (0.24 mglft?) and gelatin (50 mg./ft.)

13. Nuclei layer of yellow image transfer couplera-Pivalyla-(3-octadecylcarbamylphenylthio)-4-sulfoacetanilide potassiumsalt (60 mg./ft. colloidal palladium (0.24 mgJftf) and gelatin (50mgJftF) l4. Spacer layer ofgelatin (100 rug/ft?) 15. Blue-sensitivegelatin-silver bromide emulsion (1 10 mg. gelatin/ft. and 70 mg.silver/ftF), l-hydroxy-N-[a-(2,4-ditert-amylphenoxy)butyl]-2-naphthamide(87 mg./ft. and di n-butylphthalate (44 mg./ft.

16. Spacer layer of gelatin mg./ft.

17. Nuclei layer of yellow image transfer couplera-Pivalyla-(3-octadecylcarbamylphenylthio-4-sulfoacetanilide potassiumsalt (60 mg./ft. colloidal palladium (0.24 mg./ft. and gelatin (50mg./ft. The photosensitive emulsions listed above are negativetype,developing out emulsions. Next, an image-receiving layer ofmethyl-tri-n-dodecyl-ammonium p-toluenesulfonate (22.5 mg./ft.N-n-hexadecyl-N-morpholinium ethosulfate 150 mg./ft. and gelatin (743mg./ft. is coated on a transparent cellulose acetate film support. Thefollowing processing composition is employed in the first processingpod:

Water 100 ml. Piperidino hexose rcductonc 0.08 g. Sodium hydroxide 3.0g. 3rnethoxy-4-amino-N-ethyl-N'B- hydroxyethylaniline 3.0 g.Hydroxyethylcellulose 3.2 g. Carbon black 0.6 g.

The following processing composition is employed in the secondprocessing pod:

Water 100 ml. Hydroxyethylcellulose 3.2 g. Titanium dioxide 60 g.

A transparent sheet of cellulose acetate film base is then superposedover the top layer 17 of the element with the first processing podplaced in between the film base and the element. Next, the secondprocessing pod and the image-receiving layer are positioned on the otherside of the photosensitive element with the pod in between theimage-receiving layer and the photosensitive element. The element isthen exposed through the transparent sheet to a graduated-densitymulticolor test object. The processing compositions are spread from thepods into the film unit by passing the transfer sandwich between a pairof juxtaposed pressure rollers. After about 3 minutes at 20 C., amulticolor reproduction of the test object is observed on a whitebackground when viewed through the transparent film support side of theunit.

EXAMPLE 2 (FIG. 4 EMBODlMENT) A photosensitive element is prepared bycoating the follow ing layers in the order recited on an alkalinesolution-permeable polyvinyl alcohol film support:

1. Blue-sensitive gelatin-silver bromide emulsion 1 10 gelatin/ft. and70 mg. silver/ft.l-hydroxyN-[a-(2,4-ditert-amylphenoxy)butyl]-2-naphthamide (87 mgjft?)and din-butylphthalate (44 mg./ft.

2. Spacer layer of1-hydroxy-N-[a-(2,-4-di-tert-amylphenoxy)butyl]-2-naphthamide (20mgJftF). gelatin (100 mg./ft. and di-n-butylphthalate (10 mg./ft.

3. Nuclei layer of yellow image transfer coupler oz-Pivalyl-a-(3-octadecylcarbamylphenylthio)-4-sulfoacetanilide potassium saltmg./ft. colloidal palladium (0.48 mg./ft. and gelatin (100 mg./ft.

4. Barrier lnterlayer ofl-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyH-Z-naphthamide (87 mg./ft.di-n-butylphthalate (44 mg./ft. Carey Lea Silver (10 mg./ft. colloidalpalladium (0.48 mg./ft. and gelatin mg./ft.

5. Green-sensitive gelatin-silver bromide emulsion (l 10 mg. gelatin/ft.and 70 mg. silver/fel-hydroxy-N-[a-(2,4-ditert-amylphenoxy)butyll-2'naphthamide (87 mgjft?)and din-butylphthalate (44 mg./ft.

6. Spacer layer ofl-hydroxy'N-[a(2,4-di-tert'amylphenoxy)butyl]-2-naphthamide (20 mg./ft.gelatin (100 rug/ft?) and di-n-butylphthalate l0 mg./ft.

7. Nuclei layer of magenta image transfer coupler l-phenyl-3-(3,5-disulfobenzamido)-4-(6-hydroxy-4-pentadecylphenylazo)-5-pyrazolone,dipotassium salt (75 mg./ft.), colloidal palladium (0.48 mg./ft. andgelatin (100 mgjft?) 8. Barrier interlayer ofl-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyl]-2-naphthamide (87 mg./ft.di-n-butylphthalate (44 mg./ft. Carey Lea Silver l mg./ft. colloidalpalladium (0.48 mg./ft. and gelatin (I25 mg./ft.

9. Red-sensitive gelatin-silver bromide emulsion (110 mg. gelatin/ft.and 70 mg. silver/ft),l-hydroxy-N-[a-(2,4-ditert-amylphenoxy)butyll-2-naphthamide (87 mg./ft.and din-butylphthalate (44 mg./ft.

l0. Spacer layer ofl-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyl]-2-naphthamide (20mg./ft.), gelatin I00 mg./ft. and di-n-butylphthalate l0 mg./ft.

l 1. Nuclei layer of cyan image transfer coupler l-hydroxy- 4-(3-0ctadecylcarbamylphenylthio-N-ethyl-3 ,5 '-dicarboxy- Z-naphthanilide(97 mg./ft. colloidal palladium (0.48 mg./ft. and gelatin I00 mg./ft.")

The photosensitive emulsions listed above are negative-type,developing-out emulsions. An image-receiving layer similar to that ofexample 1 is coated on a transparent cellulose acetate film support.First and second processing pods are prepared containing the processingcompositions listed in example 1. A transparent sheet of celluloseacetate film base is then superposed over the top layer 11 of theelement with the second processing pod, i.e., the one containing water,hydroxyethylcellulose and titanium dioxide, placed in between the filmbase and the element. Next, the first processing pod and theimage-receiving layer are positioned on the other side of thephotosensitive element with the pod in between the imagereceiving layerand the photosensitive element. The element is then exposed through theimagereceiving layer to a graduated-density multicolor test object. Thefilm unit is then processed as in example 1 to obtain a multicolorreproduction of the test object on a white background when viewedthrough the transparent film support side of the unit.

EXAMPLE 3 (FIG. EMBODIMENT) A photosensitive element is prepared bycoating the following layers in the order recited on an alkalinesolution-permeable polyvinyl alcohol film support:

l. Spontaneously developable emulsion layer of ZnS nuclei (0.00043mg./ft. silver thiocyanate (30 mg./ft. cyan image transfer couplerl-hydroxy-4-(3-n-octadecylcarbamylphenylthio)-2-(3,5-dicarboxy)-N-ethylnaphthanilide100 mg./ft. antistain agent2-(B-octadecyl)-5-(B-sulfo-tert-butyl)-hydroquinone (potassium salt) (16mg./ft. and gelatin (100 mg./ft.

2. Red-sensitive gelatin-silver bromide emulsion (100 mg. gelatin/ft.and 150 mg. silver/ft?) and developer inhibitor releasing couplerl-hydroxy-4-( l-phenyl-5-tetrazolylthio)-2-(2'-n-tetradecyloxy)naphthanilide (60 mg./ft.

3. Barrier layer of gelatin-silver iodide emulsion (100 mg. gelatin/ft.and 50 mg. silver/ft?) and antistain agent Z-B-octadecyl)-5-(B-sulfo-tert-butyl )-hydroquinone (potassium salt) (32 mg./ft.

4. Spontaneously developable emulsion layer of ZnS nuclei (0.00043mg./ft. silver thiocyanate mgJftF), magenta image transfer couplerl-(4-sulfophenyl)-3-(4-sulfoanilino)-4-(2-hydroxy-4-pentadecylphenylazo)-5-pyrazolonedipotassium salt (50mg./ft. antistain agent Z-(B-octadecyU-S-(B-sulfo-tert-butyl)-hydroquinone (potassium salt) (16 mg./ft. and gelatinI00 mg./ft.

5. Green-sensitive gelatin-silver bromide emulsion 100 mg. gelatin/ft.and 75 mg. silver/ft?) and developer inhibitor releasing couplerl-hydr0xy-4-( l-phenyl-5-tetrazolylthio)-2-(2-n-tetradecyloxy)naphthanilide (60 mg./ft.

6. Barrier and yellow filter layer of gelatin silver iodide emulsion lOOmg. gelatin/ft. and 50 mg. silver/ft), antistain agentZ-(B-octadecyl)-5-(B-sulfo-tert-butyl)-hydroquinone (potassium salt) (32mg./ft. and yellow dye 4-(p-methoxyphenylazo)- l(2,4,6-trichlorophenyl)-3-[3-{a-(2,4-di-tertamylphenoxy)acetamido}benzamido1-5-pyrazolone(50 mg./ft.

7. Spontaneously developable emulsion layer of ZnS nuclei (0.00043mg./ft. silver thiocyanate (45 mg./ft. yellow image transfer couplera-benzoyl-a-(3-octadecylcarbamylphenylthio)-3,S-dicarboxyacetanilide(150 mg./ft.

antistain agent 2-(B-octadecyl)-5-(B-sulfo-tert-butyl)- hydroquinone(potassium salt) (16 mg./ft. and gelatin (100 mg./ft.

8. Blue-sensitive gelatin-silver bromide emulsion (100 mg. gelatin/ft?and 75 mg. silver/ft?) and developer inhibitor releasing couplerl-hydroxy-4( l-phenyl-5-tetrazolylthio)-2-( 2-n-tetradecyloxy)naphthanilide (60 mgjft?) The photosensitive emulsionslisted above are negative-type developing-out emulsions. Next, atransparent cellulose acetate film support is coated with I. animage-receiving layer of methyl-tri-n-dodecyl-ammoniump-toluenesulfonate(22.5 mg./ft. N-n-hexadecyl-N- morpholiniumethosulfate (150 mg./ft. and gelatin (763 mg./ft.

2. Light reflective layer of TiO (2700 mg./ft. and gelatin (270 mg./ft.and

3. Opaque layer of gelatin (360 mg./ft. and carbon black (300 mg./ft.

The following processing composition is employed in the first processingpod.

Water 100 ml. Hydroxyethylcellulose 3.2 5. Carbon black 6.0 g.

The following processing composition is employed in the secondprocessing pod:

Water 100 ml. Piperidino hexose reductone 0.08 g. Sodium hydroxide 3.0g. 3-methoxy-4-amino-N-cthyl-N- B-hydroxyehtylaniline 3 .0 g.Hydroxyethylcellulosc 3.2 g. Sodium thiosulfatc 0.6 g.

A transparent sheet of cellulose acetate film base is then superposedover the top layer 8 of the element with the first processing pod placedbetween the film base and the element. Next, the second processing podand the image-receiving element as positioned on the other side of thephotosensitive element with the pod in between the image-receivingelement and the photosensitive element. The element is then exposedthrough the transparent sheet to a graduated-density multicolor testobject. The processing compositions are spread from the pods into thefilm unit by passing the transfer sandwich" between a pair of juxtaposedpressure rollers. After about three minutes at 20 C., a multicolorreproduction of the test object is observed on a white background whenviewed through the transparent film support side of the unit.

EXAMPLE 4 (FIG. 6 EMBODIMENT) A photosensitive element is prepared bycoating the following layers in the order recited on an alkalinesolution-permeable polyvinyl alcohol film support:

1. Blue-sensitive gelatin-silver chlorobromide emulsion (100 mg.gelatin/ft. and 100 mg. silver/ft), yellow image transfer couplera-pivalyl-a-[4-(N-methyl-N-n-octadecylsulfamyl)phenoxyl4-sulfoacetanilide potassium salt (120 mg./ft.") and fogging agentformyl-4-methylphenylhydrazide (0.5 g./mole of silver chlorobromide) 2.Scavenger and yellow filter layer of l-hydroxy-N-[a-(2,4-di-tert-amylphenoxy)butyl]-2-naphthamide (45 mg./ft. tricresyl phosphate(22 mg./ft. Carey Lea Silver (10 mg./ft. and gelatin (65 mg./ft.

3. Green-sensitive gelatin-silver chlorobromide emulsion mg. gelatin/ft.and mg. silver/ft), magenta image transfer couplerl-phenyl-3-(3,5-disulfobenzamido)-4-(6-hydroxy-4-pentadecylphenylazo)-5-pyrazolone, dipotassium salt (75mg./ft. and fogging agent formyl-4-methylphenylhydrazide (0.5 g./mole ofsilver chlorobromide) 4. Scavenger interlayer ofl-hydroxy-N-[a-(2,4-di-tertamylphenoxy)butyll-2-naphthamide (45 mg./ft.tricresyl phosphate (22 mg./ft. and gelatin (65 mg./ft.

5. Red-sensitive gelatin-silver chlorobromide emulsion 120 mg.gelatin/ft. and 100 mg. silver/ft), cyan image transfer couplerl-hydroxyi- {4-[a-( 3-pentadecylphenoxy)-butyramido] phenoxy} -N-ethyl-3,5 '-dicarboxy-2-naphthanilide(75 mg./ft. and fogging agentformyl-4-methylphenylhydrazide (0.5 g./mole of silver chlorobromide) Thephotosensitive emulsions listed above are internal image emulsionshaving high internal sensitive and lower surface sensitivity a dare'prepared by the procedure described in Davey et al. US. Pat. No.2,592,250, issued Apr. 8, 1952. An imagereceiving layer similar to thatof example 1 is coated on a transparent cellulose acetate film support.The following processing composition is employed in the first processingpod:

Water lUU ml. Benzyl alcohol 0.5 ml. Piperidino hexose reductonc 0.025g. i-Nitrobenzimidazole 0.0005 g. Sodium hydroxide L25 g.4-Amino-N-ethyl-NB-hydroxyehtylaniline L5 g. l'lydroxyethylcellulose 2.5g.

The following processing composition is employed in the secondprocessing pod:

Water 100 ml. Hydroxyethylcellulose 3.2 g. Titanium dioxide 6.0 g.

An opaque sheet of poly(ethyleneterephthalate) is then coated with apl-l-lowering layer of polyacrylic acid and timing layer of polyvinylacetate. The coated opaque sheet is then superposed over the top layer 5of the element with the first processing pod placed between the coatedopaque sheet and the element. Next, the second processing pod and theimagereceiving layer are positioned on the other side of thephotosensitive element with the pod in between the imagereceiving layerand the photosensitive element. The element is then exposed through theimage-receiving layer to a graduated-density multicolor test object. Thefilm unit is then processed as in example 3 to obtain a multicolorreproduction of the test object on a white background when viewedthrough the transparent film support side of the unit.

The invention has been described in detail with particular reference topreferred embodiments thereof, but, it will be un derstood thatvariations and modifications can be effected within the spirit and scopeof the invention.

lclaim:

l. A photographic film unit which is adapted to be processed by passingsaid unit between a pair of juxtaposed pressure-applying memberscomprising:

a. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising at least one photosensitivesilver halide emulsion layer, each said silver halide emulsion layerhaving associated therewith a nondiffusible dye image-providing materialcapable of reacting with oxidized developing agent to produce adiffusible dye;

b. a top sheet superposed over the outermost layer of saidphotosensitive element from said transparent support;

c. a first rupturable container being so positioned during processingthat a compressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said top sheet and said outermost layer ofsaid photosensitive element; and

d. a second rupturable container being so positioned during processingthat a compressive force applied to said second container by saidpressure-applying members will efiect a discharge of said secondcontainers contents between said image-receiving layer and the innermostlayer of said photosensitive element from said transparent support; saidfilm unit containing a developing agent; one

of said rupturable containers containing an opacifying agent, and theother said rupturable container containing an alkaline processingcomposition.

2. The photographic film unit of claim l wherein said rupturablecontainers are positioned transverse at least a portion of a leadingedge of said photosensitive element.

3. The photographic film unit of claim 2 wherein said developing agentis an aromatic primary amino color developing agent and thephotosensitive portion of said photosensitive element comprises ared'sensitive silver halide emulsion layer having associated therewith anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible cyan dye, agreen-sensitive silver halide emulsion layer having associated therewitha nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible magenta dyeand a blue-sensitive silver halide emulsion layer having associatedtherewith a nondiffusible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a diffusibleyellow dye.

4. The photographic film unit of claim 3 wherein said top sheet istransparent, said first rupturable container contains an alkalineprocessing composition having therein an opacifying agent and saidsecond rupturable container contains an opacii'ying agent.

5. The photographic film unit of claim 3 wherein said top sheet istransparent, said first rupturable container contains an opacifyingagent and said second rupturable container contains an alkalineprocessing composition having therein an opacifying agent.

6. The photographic film unit of claim 3 wherein said top sheet istransparent, said first rupturable container contains an opacifyingagent, said second rupturable container contains an alkaline processingcomposition, and said film unit contains an opaque reflecting layerintermediate said image-receiving layer and said photosensitive element.

7. The photographic film unit of claim 3 wherein said top sheet isopaque, said first rupturable container contains an a1- kalineprocessing composition and said second rupturable container contains anopacifying agent.

8. The photographic film unit of claim 3 including a pH- lowering layerwhich is capable of lowering the pH of the film unit subsequent todiffusion therethrough by said alkaline processing composition.

9. The photographic film unit of claim 3 wherein each said nondiffusiblecoupler is contained in a layer contiguous to each said silver halideemulsion layer.

10. A photographic film unit which is adapted to be processed by passingsaid unit between a pair of juxtaposed pressure-applying memberscomprising:

l. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited:

a. a direct positive, red-sensitive silver halide emulsion layercontaining a nondiffusible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a dilifusiblecyan dye;

. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent;

c. a direct positive, green-sensitive silver halide emulsion layercontaining a nondiffusible coupler capable of reacting with oxidizedaromatic: primary amino color developing agent to produce a diffusiblemagenta dye;

d. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent; and

e. a direct positive, blue-sensitive silver halide emulsion layercontaining a nondiffusible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a diffusibleyellow dye;

each said nondiffusible coupler having the formula:

DYELlNK(COUPBALL BALL-LlNK-(COUP-SOL wherein:

l. DYE is a dye radical exhibiting selective absorption in the visiblespectrum and containing an acidic solubilizing group;

2. LINK is a connecting radical selected from the group consisting of anazo radical, a mercuri radical, an oxy radical, an alkylidene radical, athio radical, a dithio radical and an azoxy radical;

3. COUP is a coupler radical selected from the group consisting of aS-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLINK;

4. BALL is a photographically inert organic ballasting radical of suchmolecular size and configuration as to render said coupler nondiffusibleduring development in said alkaline processing composition;

5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and

6. n is an integer of 1 to 2 when said LINK is an alkylidene radical,and n is 1 when said LlNK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical, and an azoxy radical;

II. a transparent sheet superposed over said blue-sensitive silverhalide emulsion layer of said photosensitive element;

III. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said transparent sheet and said underlyingblue-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and

IV. a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressureapplying members will effect a discharge of said secondcontainers contents between said alkaline solution-permeable support ofsaid photosensitive element and said image-receiving layer;

said film unit containing an aromatic primary amino color developingagent; one of said rupturable containers containing an opacifying agentand the other said rupturable container containing an alkalineprocessing composition.

11. The photographic film unit of claim wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said alkaline processing composition, saidtransparent sheet is coated with, successively, a pH-lowering layer andan alkaline solution-permeable polymeric timing layer on the sidethereof which is closest to said photosensitive element, saidpH-lowering layer being capable of lowering the pH of the film unitsubsequent to diffusion therethrough by said alkaline processingcomposition, and each said direct positive silver halide emulsion is aninternal image emulsion wherein the silver halide forms latent imagespredominantly inside the silver halide rains. g 12. The photographicfilm unit of claim ll wherein said first rupturable container containsan alkaline processing composition having therein an opacifying agentand said second rupturable container contains an opacifying agent.

13. The photographic film unit of claim 11 wherein said first rupturablecontainer contains an opacifying agent, said second rupturable containercontains an alkaline processing composition and said film unit containsan opaque reflecting layer intermediate said image-receiving layer andsaid photosensitive element.

14. A photographic film unit which is adapted to be processed by passingsaid unit between a pair of juxtaposed pressure-applying memberscomprising:

I. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited:

a. a direct positive, blue-sensitive silver halide emulsion layercontaining a nondiffusible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a diffusibleyellow dye;

b. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent;

0. a direct positive, green-sensitive silver halide emulsion layercontaining a nondiffusible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a diffusiblemagenta dye;

d. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent; and

e. a direct positive, red-sensitive silver halide emulsion layercontaining a nondifi'usible coupler capable of reacting with oxidizedaromatic primary amino color developing agent to produce a diffusiblecyan dye;

each said nondiffusible coupler having the formula:

wherein:

l. DYE is a dye radical exhibiting selective absorption in the visiblespectrum and containing an acidic solubilizing group;

2. LINK is a connecting radical selected from the group consisting of anazo radical, a mercuri radical, an oxy radical, an alkylidene radical, athio radical, a dithio radical and an azoxy radical;

3. COUP is a coupler radical selected from the group consisting of aS-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLlNK;

4. BALL is a photographically inert organic ballasting radical of suchmolecular size and configuration as to render said coupler nondiffusibleduring development in said alkaline processing composition;

5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and

6. a is an integer of l to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical;

ll. a top sheet superposed over said red-sensitive silver halideemulsion layer of said photosensitive element;

lll. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said top sheet and said underlyingred-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and

IV. a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressure-applying members will effect a discharge of said secondcontainers contents between said alkaline solution-permeable support ofsaid photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent; one ofsaid rupturable containers containing an opacifying agent and the othersaid rupturable container containing an alkaline processing composition.

15. The photographic film unit of claim M wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said alkaline processing composition, said top sheetis coated with, successively, a pH-lowering layer and an alkalinesolutionpermeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition, and each saiddirect positive silver halide emulsion is an internal image emulsionwherein the silver halide forms latent images predominantly inside thesilver halide grains.

lb. The photographic film unit of claim wherein said top sheet istransparent, said first rupturable container contains an opacifyingagent and said second rupturable container contains an alkalineprocessing composition having therein an opacifying agent,

17. The photographic film unit of claim 15 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.

Hill. A photographic film unit which is adapted to be processed bypassing said unit between a pair of juxtaposed pressure-applying memberscomprising:

I. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited:

a, a Color-Forming Unit comprising:

1. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; and

2. a red-sensitive silver halide emulsion layer, the silver halide ofwhich has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein;

b. an alkaline solution-permeable barrier layer comprising a hydrophiliccolloid containing a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans;

c. a Color Forming Unit comprising:

1. a developable emulsion layer of a hydrophilic colloid and awateninsoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible magenta dye; and

2. a green-sensitive silver halide emulsion layer the silver halide ofwhich has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein;

d. an alkaline solution-permeable barrier layer comprising a hydrophiliccolloid containing a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans;

e. a Color-Forming Unit comprising:

1. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye; and

2. a blue-sensitive silver halide emulsion layer the silver halide ofwhich has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent. to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein;

each said nondiffusible coupler having the formula:

wherein:

l. DYE is a dye radical exhibiting selective absorption in the visiblespectrum and containing an acidic solubilizing group;

2. LINK is a connecting radical selected from the group consisting of anazo radical, a mercuri radical, an oxy radical, an alkylidene radical, athio radical, a dithio radical and an azoxy radical;

3. COUP is a coupler radical selected from the group consisting of aS-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLINK;

4. BALL is a photographically inert organic ballasting radical of suchmolecular size and configuration as to render said coupler nondiffusibleduring development in said alkaline processing composition;

5, SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and

6. n is an integer of l to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical;

II. a transparent sheet superposed over said blue-sensitive silverhalide emulsion layer of said photosensitive element;

III. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said transparent sheet and said underlyingblue-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and

IV. a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressure-applying members will effect a discharge of said secondcontainers contents between said alkaline solution-permeable support ofsaid photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent; one ofsaid rupturable containers containing an opacifying agent and the othersaid rupturable container containing an alkaline processing composition.

19. The photographic film unit of claim 18 wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said al' kaline processing composition, saiddevelopable emulsion is an emulsion of a hydrophilic colloid, silverthiocyanate and physical development nuclei that can be developed tosubstantial density without exposure to light, and said transparentsheet is coated with, successively, a pI-I-lowering layer and analkaline solution-permeable polymeric timing on the side thereof whichis closest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition.

20. The photographic film unit of claim 19 wherein said first rupturablecontainer contains an alkaline processing composition having therein anopacifying agent and said second rupturable container contains anopacifying agent.

21. The photographic film unit of claim 19 wherein said first rupturablecontainer contains an opacifying agent, said second rupturable containercontains an alkaline processing composition and said film unit containsan opaque reflecting layer intermediate said image-receiving layer andsaid photosensitive element.

22. A photographic film unit which is adapted to be processed by passingsaid unit between a pair of juxtaposed pressure-applying memberscomprising:

I. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited:

a. a Color-Forming Unit comprising:

1. a blue-sensitive silver halide emulsion layer, the

silver halide of which has contiguous thereto a nondiffusibledevelopment inhibitor-releasing coupler which is capable of reactingwith oxidized aromatic primary amino color developing agent to release adiffusible mercaptan development inhibitor which is capable of diffusingimagewise to said adjacent developable emulsion layer to inhibitdevelopment therein; and

. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye;

b. an alkaline solution-permeable barrier layer comprising a hydrophiliccolloid containing a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans;

c. a Color-Forming Unit comprising:

l. A green-sensitive silver halide emulsion layer, the

silver halide of which has contiguous thereto a nondiffusibledevelopment inhibitor-releasing coupler which is capable of reactingwith oxidized aromatic primary amino color developing agent to release adiffusible mercaptan development inhibitor which is capable of diffusingimagewise to said adjacent developable emulsion layer to inhibitdevelopment therein; and

2. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a dilTusible magenta dye;

d. an alkaline solution-permeable barrier layer comprising a hydrophiliccolloid containing a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans;

e. a Color-Forming Unit comprising:

l. a red-sensitive silver halide emulsion layer the silver halide ofwhich has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; and

2. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; each saidnondiffusible coupler having the formula:

DYELINI((COUPBALL),

BALLLINK(COUPSOL),,

wherein:

l. DYE is a dye radical exhibiting selective absorption in the visiblespectrum and containing an acidic solubilizing group;

2. LINK is a connecting radical selected from the group consisting of anazo radical, a mercuri radical, an oxy radical, an alkylidene radical, athio radical, a dithio radical and an azoxy radical;

3. COUP is a coupler radical selected from the group consisting of aS-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLINK;

4. BALL is a photographically inert organic ballasting' radical of suchmolecular size and configuration as to render said coupler nondiffusibleduring development in said alkaline processing composition;

5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solu bilizing group;and

6. n is an integer of l to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical;

II. a top sheet superposed over the outermost layer of saidphotosensitive element;

III. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said top sheet and the underlying outermostlayer of said photosensitive element adjacent thereto; and

IV. a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressure-applying members will effect a discharge of said secondcontainers contents between said alkaline solution-permeable support ofsaid photosensitive element and said image-receiving layer;

said film unit containing an aromatic primary amino color developingagent; one of said rupturable containers containing an opacifying agentand the other said rupturable container containing an alkalineprocessing composition.

23. The photographic film unit of claim 22 wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said alkaline processing composition, saiddevelopable emulsion is an emulsion of a hydrophilic colloid, silverthiocyanate and physical development nuclei that can be developed tosubstantial density without exposure to light, and said top sheet iscoated with, successively, a pH-lowering layer and an alkalinesolution-permeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said plHl-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition.

24. The photographic film unit of claim 23 wherein said top sheet istransparent, said first rupturable container contains an opacifyingagent and said second rupturable container container contains analkaline processing composition having therein an opacifying agent.

25. The photographic film unit of claim 23 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.

26. A photographic film unit which is adapted to be processed by passingsaid unit between a pair of juxtaposed pressure-applying memberscomprising a transparent support coated with an image-receiving layerhaving thereon a photosensitive element comprising an alkalinesolutionperrneable support having thereon the following layers in theorder recited:

a. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible cyan dye;

b. a spacer layer comprising a hydrophilic polymer;

c. a red-sensitive silver halide emulsion layer containing animmobilizing coupler which is capable of reacting with oxidized aromaticprimary amino color developing agent to form an immobile product;

d. an alkaline solution-permeable barrier layer for retaining solublesilver ion complex;

e. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a difiusible magenta dye;

f. a spacer layer comprising a hydrophilic polymer;

g. a green-sensitive silver halide emulsion layer containing animmobilizing coupler which is capable of reacting with oxidized aromaticprimary amino color developing agent to form an immobile product;

h. an alkaline solution-permeable barrier layer for retaining solublesilver ion complex;

i. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible yellow dye;

j. a spacer layer comprising a hydrophilic polymer; and

k. a blue-sensitive silver halide emulsion layer containing animmobilizing coupler which is capable of reacting with oxidized aromaticprimary amino color developing agent to form an immobile product; eachsaid nondifiusible coupler having the formula DYELINl(--(COUP-BALL),,

BALL-LINI(--(COUPSOL),,

wherein:

l. DYE is a dye radical exhibiting selective absorption in the visiblespectrum and containing an acidic solubilizing group;

2. LINK is a connecting radical selected from the group consisting of anazo radical, a mercuri radical, an oxy radical, an alkylidene radical, athio radical, a dithio radical and an azoxy radical;

3. COUP is a coupler radical selected from the group consisting of aS-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLINK;

4. BALL is a photographically inert organic ballasting radical of suchmolecular size and configuration as to render said coupler nondiffusibleduring development in said alkaline processing composition;

5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and

6. n is an integer of l to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical;

II. a transparent sheet superposed over said blue-sensitive silverhalide emulsion layer of said photosensitive element;

III. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainers contents between said transparent sheet and said underlyingblue-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and

IV. a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressure-applying members will effect a discharge of said secondcontainers contents between said alkaline solution-permeable support ofsaid photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent and asilver halide solvent; one of said rupturable containers containing anopacifying agent and the other said rupturable container containing analkaline processing composition.

27. The photographic film unit of claim 26 wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said alkaline processing composition, said silverhalide solvent is present in said rupturable container, and saidtransparent sheet is coated with, successively, a pill-lowering layerand an alkaline solution-permeable polymeric timing layer on the sidethereof which is closest to said photosensitive element, saidpl-Howering layer being capable of lowering the pH of the film unitsubsequent to diffusion therethrough by said alkaline processingcomposition.

28. The photographic film unit of claim 27 wherein said first rupturablecontainer contains an alkaline processing composi-

2. The photographic film unit of claim 1 wherein said rupturablecontainers are positioned transverse at least a portion of a leadingedge of said photosensitive element.
 2. LINK is a connecting radicalselected from the group consisting of an azo radical, a mercuri radical,an oxy radical, an alkylidene radical, a thio radical, a dithio radicaland an azoxy radical;
 2. LINK is a connecting radical selected from thegroup consisting of an azo radical, a mercuri radical, an oxy radical,an alkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. LINK is a connecting radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, analkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. a red-sensitive silver halide emulsion layer, the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; b. an alkaline solution-permeable barrier layer comprising ahydrophilic colloid containing a water-insoluble reactant capable offorming a water-insoluble salt with mercaptans; c. a Color-Forming Unitcomprising:
 2. a green-sensitive silver halide emulsion layer the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; d. an alkaline solution-permeable barrier layer comprising ahydrophilic colloid containing a water-insoluble reactant capable offorming a water-insoluble salt with mercaptans; e. a Color-Forming Unitcomprising:
 2. a blue-sensitive silver halide emulsion layer the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; each said nonDiffusible coupler having the formula:DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 2. LINK is aconnecting radical selected from the group consisting of an azo radical,a mercuri radical, an oxy radical, an alkylidene radical, a thioradical, a dithio radical and an azoxy radical;
 2. a developableemulsion layer of a hydrophilic colloid and a water-insoluble metal saltwhich is developable by an aromatic primary amino color developing agentto substantial density without exposure to light, said metal salt havingcontiguous thereto a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible yellow dye; b. an alkaline solution-permeable barrier layercomprising a hydrophilic colloid containing a water-insoluble reactantcapable of forming a water-insoluble salt with mercaptans; c. aColor-Forming Unit comprising:
 2. a developable emulsion layer of ahydrophilic colloid and a water-insoluble metal salt which isdevelopable by an aromatic primary amino color developing agent tosubstantial density without exposure to light, said metal salt havingcontiguous thereto a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible magenta dye; d. an alkaline solution-permeable barrier layercomprising a hydrophilic colloid containing a water-insoluble reactantcapable of forming a water-insoluble salt with mercaptans; e. aCOlor-Forming Unit comprising:
 2. a developable emulsion layer of ahydrophilic colloid and a water-insoluble metal salt which isdevelopable by an aromatic primary amino color developing agent tosubstantial density without exposure to light, said metal salt havingcontiguous thereto a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible cyan dye; each said nondiffusible coupler having the formula:DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 2. LINK is aconnecting radical selected from the group consisting of an azo radical,a mercuri radical, an oxy radical, an alkylidene radical, a thioradical, a dithio radical and an azoxy radical;
 2. LINK is a connectingradical selected from the group consisting of an azo radical, a mercuriradical, an oxy radical, an alkylidene radical, a thio radical, a dithioradical and an azoxy radical;
 2. LINK is a connecting radical selectedfrom the group consisting of an azo radical, a mercuri radical, an oxyradical, an alkylidene radical, a thio radical, a dithio radical and anazoxy radical;
 2. LINK is a connecting radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, analkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. LINK is a connecting radical elected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, analkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. a developable emulsion layer of a hydrophilic colloid and awater-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye; b. an alkalinesolution-permeable barrier layer comprising a hydrophilic colloidcontaining a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans; c. a Color-Forming Unitcomprising:
 2. a developable emulsion layer of a hydrophilic colloid anda water-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible magenta dye; d. aN alkalinesolution-permeable barrier layer comprising a hydrophilic colloidcontaining a water-insoluble reactant capable of forming awater-insoluble salt with mercaptans; e. a Color-Forming Unitcomprising:
 2. a developable emulsion layer of a hydrophilic colloid anda water-insoluble metal salt which is developable by an aromatic primaryamino color developing agent to substantial density without exposure tolight, said metal salt having contiguous thereto a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye: each saidnondiffusible coupler having the formula: DYE-LINK-(COUP-BALL)n orBALL-LINK-(COUP-SOL)n wherein:
 2. LINK is a connecting radical selectedfrom the group consisting of an azo radical, a mercury radical, an oxyradical, an alkylidene radical, a thio radical, a dithio radical and anazoxy radical;
 2. LINK is a connecting radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, analkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. a red-sensitive silver halide emulsion layer, the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; b. an alkaline solution-permeable barrier layer comprising ahydrophilic colloid containing a water-insoluble reactant capable offorming a water-insoluble salt with mercaptans; c. a Color-Forming Unitcomprising:
 2. a green-sensitive silver halide emulsion layer the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; d. an alkaline solution-permeable barrier layer comprising ahydrophilic colloid containing a water-insoluble reactant capable offorming a water-insoluble salt with mercaptans; e. a Color-Forming Unitcomprising:
 2. LINK is a connecting radical selected from the groupconsisting of an azo radical, a mercury radical, an oxy radical, analkylidene radical, a thio radical, a dithio radical and an azoxyradical;
 2. a blue-sensitive silver halide emulsion layer the silverhalide of which has contiguous thereto a nondiffusible developmentinhibitor-releasing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to release a diffusiblemercaptan development inhibitor which is capable of diffusing imagewiseto said adjacent developable emulsion layer to inhibit developmenttherein; each said nondiffusible coupler having the formulaDYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK:
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK:
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK:
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazoLonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, saiD COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. COUP is acoupler radical selected from the group consisting of a 5-pyrazolonecoupler radical, a pyrazolotriazole coupler radical, a phenolic couplerradical and an open-chain ketomethylene coupler radical, said COUP beingsubstituted in the coupling position with said LINK;
 3. The photographicfilm unit of claim 2 wherein said developing agent is an aromaticprimary amino color developing agent and the photosensitive portion ofsaid photosensitive element comprises a red-sensitive silver halideemulsion layer having associated therewith a nondiffusible couplercapable of reacting with oxidized aromatic primary aminO colordeveloping agent to produce a diffusible cyan dye, a green-sensitivesilver halide emulsion layer having associated therewith a nondiffusiblecoupler capable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible magenta dye and ablue-sensitive silver halide emulsion layer having associated therewitha nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible yellow dye.3. COUP is a coupler radical selected from the group consisting of a5-pyrazolone coupler radical, a pyrazolotriazole coupler radical, aphenolic coupler radical and an open-chain ketomethylene couplerradical, said COUP being substituted in the coupling position with saidLINK;
 4. BALL is a photographically inert organic ballasting radical ofsuch molecular size and configuration as to render said couplernondiffusible during development in said alkaline processingcomposition;
 4. BALL is a photographically inert organic ballastingradical of such molecular size and configuration as to render saidcoupler nondiffusible during development in said alkaline processingcomposition;
 4. The photographic film unit of claim 3 wherein said topsheet is transparent, said first rupturable container contains analkaline processing composition having therein an opacifying agent andsaid second rupturable container contains an opacifying agent.
 4. BALLis a photographically inert organic ballasting radical of such molecularsize and configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 4. BALL is aphotographically inert organic ballasting radical of such molecular sizeand configuration as to render said coupler nondiffusible duringdevelopment in said alkaline processing composition;
 5. SOL is selectedfrom the group consisting of a hydrogen atom and an acidic solubilizinggroup when said color developing agent contains an acidic solubilizinggroup, and SOL is an acidic solubilizing group when said colordeveloping agent is free of an acidic solubilizing group; and6. n is aninteger of 1 to 2 when said LINK is an alkylidene radical, and n is 1when said LINK is a radical selected from the group consisting of an azoradical, a mercury radical, an oxy radical, a thio radical, a dithioradical, and an azoxy radical; B. a top sheet superposed over theoutermost layer of said photosensitive element; C. a first rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive so that a compressive force applied to saidfirst container by said pressure-applying members will effect adischarge of said first container''s contents between said top sheet andsaid underlying outermost layer of said photosensitive element adjacentthereto; and D. a second rupturable container being positionedtransverse at least a portion of a leading edge of said photosensitiveelement so that a compressive force applied to said second container bysaid pressure-applying members will effect a discharge of said secondcontainer''s contents between said alkaline solution-permeable supportof said photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent and asilver halide solvent; one of said rupturable containers containing anopacifying agent; the other said rupturable container containing analkaline processing composition; and said imagewise exposure beingeffected through said transparent support; II. applying compressiveforce to said rupturable containers to effect said discharge betweensaid layers; III. thereby effecting development of each of said exposedsilver halide emulsion layers, thus causing said aromatic primary aminocolor developing agent to become oxidized imagewise; IV. said oxidizeddeveloping agent reacting with said immobilizing coupler present in eachsaid photosensitive silver halide emulsion layer to form an immobileproduct; V. whereby remaining silver halide in each said silver halideemulsion layer corresponding to unexposed and thus undeveloped areasforms a soluble silver complex with said silver halide solvent presentin said processing composition and transfers to each said adjacentnuclei layer; VI. whereby said transferred silver complex is reduced insaid nuclei layer, thus causing said developing agent to becomeoxidized; VII. said oxidized developing agent reacting with saidnondiffusible coupler present in eaCh said nuclei layer to formimagewise distributions, respectively, of diffusible cyan, magenta andyellow dye as a function of said imagewise exposure of each said silverhalide emulsion layer; VIII. whereby at least a portion of saidimagewise distributions of diffusible cyan, magenta and yellow dyediffuse to said image-receiving layer to provide a positive dye imageviewable through said transparent support; and IX. maintaining thecomposite structure intact subsequent to said processing.
 5. SOL isselected from the group consisting of a hydrogen atom and an acidicsolubilizing group when said color developing agent contains an acidicsolubilizing group, and SOL is an acidic solubilizing group when saidcolor developing agent is free of an acidic solubilizing group; and 5.SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and5. SOL is selected from the group consisting of a hydrogen atom and anacidic solubilizing group when said color developing agent contains anacidic solubilizing group, and SOL is an acidic solubilizing group whensaid color developing agent is free of an acidic solubilizing group; and6. n is an integer of 1 to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical; II. a top sheetsuperposed over said outermost layer of said photosensitive element;III. a first rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainer''s contents between said top sheet and the underlyingoutermost layer of said photosensitive element adjacent thereto; and IV.a second rupturable container being positioned transverse at least aportion of a leading edge of said photosensitive element so that acompressive force applied to said second container by saidpressure-applying members will effect a discharge of said secondcontainer''s contents between said alkaline solution-permeable supportof said photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent and asilver halide solvent; one of said rupturable containers containing anopacifying agent and the other said rupturable container containing analkaline processing composition.
 5. SOL is selected from the groupconsisting of a hydrogen atom and an acidic solubilizing group when saidcolor developing agent contains an acidic solubilizing group, and SOL isan acidic solubilizing group when said color developing agent is free ofan acidic solubilizing group; and
 5. SOL is selected from the groupconsisting of a hydrogen atom and an acidic solubilizing group when saidcolor developing agent contains an acidic solubilizing group, and SOL isan acidic solubilizing group when said color developing agent is free ofan acidic solubilizing group; and
 5. SOL is selected from the groupconsisting of a hydrogen atom and an acidic solubilizing group when saidcolor developing agent contains an acidic solubilizing group, and SOL isan acidic solubilizing group when said color developing agent is free ofan acidic solubilizing group; and
 5. SOL is selected from the groupconsisting of a hydrogen atom and an acidic solubilizing group when saidcolor developing agent contains an acidic solubilizing group, and SOL isan acidic solubilizing group when said color developing agent is free ofan acidic solubilizing group; and
 5. SOL is selected from the groupconsisting of a hydrogen atom and an acidic solubilizing group when saidcolor developing agent contains an acidic solubilizing group, and SOL isan acidic solubilizing group when said color developing agent is free ofan acidic solubilizing group; and
 5. The photographic film unit of claim3 wherein said top sheet is transparent, said first rupturable containercontains an opacifying agent and said second rupturable containercontains an alkaline processing composition having therein an opacifyingagent.
 5. SOL is selected from the group consisting of a hydrogen atomand an acidic solubilizing group when said color developing agentcontains an acidic solubilizing group, and SOL is an acidic solubilizinggroup when said color developing agent is free of an acidic solubilizinggroup; and
 5. SOL is selected from the group consisting of a hydrogenatom and an acidic solubilizing group when said color developing agentcontains an acidic solubilizing group, and SOL is an acidic solubilizinggroup when said color developing agent is free of an acidic solubilizinggroup; and
 6. The photographic film unit of claim 3 wherein said topsheet is transparent, said first rupturable container contains anopacifying agent, said second rupturable container contains an alkalineprocessing composition, and said film unit contains an opaque reflectinglayer intermediate said image-receiving layer and said photosensitiveelement.
 6. n is an integer of 1 to 2 when said LINK is an alkylideneradical, and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical; II. a top sheetsuperposed over said red-sensitive silver halide emulsion layer of saidphotosensitive element; III. a first rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to said firstcontainer by said pressure-applying members will effect a discharge ofsaid first container''s contents between said top sheet and saidunderlying red-sensitive silver halide emulsion layer of saidphotosensitive element adjacent thereto; and IV. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent and the other said rupturable containercontaining an alkaline processing composition.
 6. n is an integer of 1to 2 when said LINK is an alkylidene radical, and n is 1 when said LINKis a radical selected from the group consisting of an azo radical, amercuri radical, an oxy radical, a thio radical, a dithio radical and anazoxy radical; II. a transparent sheet superposed over saidblue-sensitive silver halide emulsion layer of said photosensitiveelement; III. a first rupturable container being positioned transverseat least a portion of a leading edge of said photosensitive element sothat a compressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainer''s contents between said transparent sheet and said underlyingblue-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and IV. a second rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to saidsecond container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent and the other said rupturable containercontaining an alkaline processing composition.
 6. n is an integer of 1to 2 when said LINK is an alkylidene radical, and n is 1 when said LINKis a radical selected from the group consisting of an azo radical, amercuri radical, an oxy radical, a thio radical, a dithio radical and anazoxy radical; II. a top sheet superposed over the outermost layer ofsaid photosensitive element; III. a first rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to said firstcontainer by said pressure-applying members will effect a discharge ofsaid first container''s contents between said top sheet and theunderlying outermost layer of said photosensitive element adjacentthereto; and IV. a second rupturable container being positionedtransverse at least a portion of a leading edge of said photosensitiveelement so that a compressive force applied to said second container bysaid pressure-applying members will effect a discharge of said secondcontainer''s contents between said alkaline solution-permeable supportof said photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent; one ofsaid rupturable containers containing an opacifying agent and the othersaid rupturable container containing an alkaline processing composition.6. n is an integer of 1 to 2 when said LINK is an alkylidene radical,and n is 1 when said LINK is a radical selected from the groupconsisting of an azo radical, a mercuri radical, an oxy radical, a thioradical, a dithio radical and an azoxy radical; II. a transparent sheetsuperposed over said blue-sensitive silver halide emulsion layer of saidphotosensitive element; III. a first rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to said firstcontainer by said pressure-applying members will effect a discharge ofsaid first container''s contents between said transparent sheet and saidunderlying blue-sensitive silver halide emulsion layer of saidphotosensitive element adjacent thereto; and IV. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent and a silver halide solvent; one of saidRupturable containers containing an opacifying agent and the other saidrupturable container containing an alkaline processing composition.
 6. nis an integer of 1 to 2 when said LINK is an alkylidene radical, and nis 1 when said LINK is a radical selected from the group consisting ofan azo radical, a mercuri radical, an oxy radical, a thio radical, adithio radical, and an azoxy radical; II. a transparent sheet superposedover said blue-sensitive silver halide emulsion layer of saidphotosensitive element; III. a first rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to said firstcontainer by said pressure-applying members will effect a discharge ofsaid first container''s contents between said transparent sheet and saidunderlying blue-sensitive silver halide emulsion layer of saidphotosensitive element adjacent thereto; and IV. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent and the other said rupturable containercontaining an alkaline processing composition.
 6. n is an integer of 1to 2 when said LINK is an alkylidene radical, and n is 1 when said LINKis a radical selected from the group consisting of an azo radical, amercury radical, an oxy radical, a thio radical, a dithio radical and anazoxy radical; B. a top sheet superposed over the outermost layer ofsaid photosensitive element; C. a first rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to said firstcontainer by said pressure-applying members will effect a discharge ofsaid first container''s contents between said top sheet and theunderlying outermost layer of said photosensitive element adjacentthereto; and D. a second rupturable container being positionedtransverse at least a portion of a leading edge of said photosensitiveelement so that a compressive force applied to said second container bysaid pressure-applying members will effect a discharge of said secondcontainer''s contents between said alkaline solution-permeable supportof said photosensitive element and said image-receiving layer; said filmunit containing an aromatic primary amino color developing agent; one ofsaid rupturable containers containing an opacifying agent; the othersaid rupturable container containing an alkaline processing composition;and said imagewise exposure being effected through said transparentsupport; II. applying compressive force to said rupturable containers toeffect said discharges between said layers; III. thereby effectingdevelopment of each oF said exposed silver halide emulsion layers, thuscausing said aromatic primary amino color developing agent to becomeoxidized imagewise; IV. whereby said oxidized developing agent reactswith said nondiffusible development inhibitor-releasing couplercontiguous to the silver halide of each said photosensitive silverhalide emulsion layer to release a diffusible mercaptan developmentinhibitor; V. each said mercaptan development inhibitor thereafterdiffusing imagewise to each said adjacent developable emulsion layer toinhibit development therein; VI. each said barrier layer preventing saiddiffusible mercaptan development inhibitor formed in one Color-FormingUnit from diffusing to another Color-Forming Unit by forming aninsoluble salt with mercaptans diffusing to said barrier layer; VII.whereby the remaining areas of each said developable emulsion layerwherein development has not been inhibited are thus developedspontaneously by said developing agent thus causing said developingagent to become oxidized; VIII. whereby said oxidized developing agentwill then react with said nondiffusible coupler contiguous to the metalsalt in each developable emulsion layer to form imagewise distributions,respectively, of diffusible cyan, magenta and yellow dye as a functionof said imagewise exposure of each said silver halide emulsion layer;IX. whereby at least a portion of said imagewise distributions ofdiffusible cyan, magenta and yellow dye diffuse to said image-receivinglayer to provide a positive dye image viewable through said transparentsupport; and X. maintaining the composite structure intact subsequent tosaid processing.
 6. n is an integer of 1 to 2 when said LINK is analkylidene radical, and n is 1 when said LINK is a radical selected fromthe group consisting of an azo radical, a mercury radical, an oxyradical, a thio radical, a dithio radical and an azoxy radical; B. atransparent sheet superposed over said blue-sensitive silver halideemulsion layer of said photosensitive element; C. a first rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said first container by said pressure-applying members will effect adischarge of said first container''s contents between said transparentsheet and said underlying blue-sensitive silver halide emulsion layer ofsaid photosensitive element adjacent thereto; and D. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between saidphotosensitive element and said image-receiving layer; said film unitcontaining an aromatic primary amino color developing agent and a silverhalide solvent; one of said rupturable containers containing anopacifying agent; the other said rupturable container containing analkaline processing composition; said imagewise exposure being effectedthrough said transparent sheet; II. applying compressive force to saidrupturable containers to effect said discharges between said layers;III. thereby effecting development of each of said exposed silver halideemulsion layers, thus causing said aromatic primary amino colordeveloping agent to become oxidized imagewise; IV. said oxidizeddeveloping agent reacting with said iMmobilizing coupler present in eachsaid photosensitive silver halide emulsion layer to form an immobileproduct; V. whereby remaining silver halide in each said silver halideemulsion layer corresponding to unexposed and thus undeveloped areasforms a soluble silver complex with said silver halide solvent presentin said processing composition and transfers to each said adjacentnuclei layer; VI. whereby said transferred silver complex is reduced insaid nuclei layer, thus causing said developing agent to becomeoxidized; VII. said oxidized developing agent reacting with saidnondiffusible coupler present in each said nuclei layer to formimagewise distributions, respectively, of diffusible cyan, magenta andyellow dye as a function of said imagewise exposure of each said silverhalide emulsion layer; VIII. whereby at least a portion of saidimagewise distributions of diffusible cyan, magenta and yellow dyediffuse to said image-receiving layer to provide a positive dye imageviewable through said transparent support; and IX. maintaining thecomposite structure intact subsequent to said processing.
 6. n is aninteger of 1 to 2 when said LINK is an alkylidene radical, and n is 1when said LINK is a radical selected from the group consisting of an azoradical, a mercuri radical, an oxy radical, a thio radical, a dithioradical and an azoxy radical; B. a transparent sheet superposed oversaid blue-sensitive silver halide emulsion layer of said photosensitiveelement; C. a first rupturable container being positioned transverse atleast a portion of a leading edge of said photosensitive element so thata compressive force applied to said first container by saidpressure-applying members will effect a discharge of said firstcontainer''s contents between said transparent sheet and said underlyingblue-sensitive silver halide emulsion layer of said photosensitiveelement adjacent thereto; and D. a second rupturable container beingpositioned transverse at least a portion of a leading edge of saidphotosensitive element so that a compressive force applied to saidsecond container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent; the other said rupturable containercontaining an alkaline processing composition; and said imagewiseexposure being effected through said transparent sheet; II. applyingcompressive force to said rupturable containers to effect saiddischarges between said layers; III. thereby effecting deveLopment ofeach of said exposed, direct positive silver halide emulsion layers,thus causing said aromatic primary amino color developing agent tobecome oxidized imagewise corresponding to unexposed areas of each saiddirect positive silver halide emulsion layer; IV. said oxidizeddeveloping agent reacting with said nondiffusible coupler present ineach said silver halide emulsion layer to form imagewise distributions,respectively, of diffusible cyan, magenta and yellow dye as a functionof said imagewise exposure of each said silver halide emulsion layer; V.whereby at least a portion of said imagewise distributions of diffusiblecyan, magenta and yellow dye diffuse to said image-receiving layer toprovide a positive dye image viewable through said transparent support;and VI. the composite structure being maintained intact subsequent tosaid processing.
 6. n is a integer of 1 to 2 when said LINK is analkylidene radical, and n is 1 when said LINK is a radical selected fromthe group consisting of an azo radical, a mercuri radical, an oxyradical, a thio radical, a dithio radical, and a azoxy radical; B. atransparent sheet superposed over said blue-sensitive silver halideemulsion layer of said photosensitive element; C. a first rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that compressive force applied tosaid first container by said pressure-applying members will affect adischarge of said first container''s contents between said transparentsheet said underlying blue-sensitive silver halide emulsion layer ofsaid photosensitive element adjacent thereto; and D. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing a aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent; the other said rupturable containercontaining an alkaline processing composition; and said imagewiseexposure being effected through said transparent sheet; II. applyingcompressive force to said rupturable containers to affect saiddischarges between said layers; III. thereby effecting development ofeach of said exposed silver halide emulsion layers, thus causing saidaromatic primary amino color developing agent to become oxidizedimagewise; IV. whereby said oxidized developing agent reacts with saidnondiffusible development inhibitor-releasing coupler contiguous to thesilver halide of each said photosensitive silver halide emulsion layerto release a diffusible mercaptan development inhibitor; V. each saidmercaptan development inhibitor thereafter diffusing imagewise to eachsaid adjacent developable emulsion layer to inhibit development therein;VI. each said barrier layer preventing said diffusible mercaptandevelopment inhibitor formed in one Color-Forming Unit from diffusing toanother Color-Forming Unit by forming an insoluble salt with mercaptansdiffusing to said barrier layer; VII. whereby the remaining areas ofeach said developable emulsion layer wherein development has not beeninhibited are thus developed spontaneously by said developing agent thuscausing said developing agent to become oxidized; VIII. whereby saidoxidized developing agent will the react with said nondiffusible couplercontiguous to the metal salt in each developable emulsion layer to formImagewise distributions, respectively, of diffusible cyan, magnet andyellow dye as a function of said imagewise exposure of each said silverhalide emulsion layer; IX. whereby at least a portion of said imagewisedistributions of diffusible cyan, magenta and yellow dye diffuse to saidimage-receiving layer to provide a positive dye image viewable throughsaid transparent support; and X. maintaining the composite structureintact subsequent to said processing.
 6. n is an integer of 1 to 2 whensaid LINK is an alkylidene radical, and n is 1 when said LINK is aradical selected from the group consisting of an azo radical, a mercuriradical, an oxy radical, a thio radical, a dithio radical and an azoxyradical; B. a top sheet superposed over said red-sensitive silver halideemulsion layer of said photosensitive element; C. a first rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said first container by said pressure-applying members will effect adischarge of said first container''s contents between said top sheet andsaid underlying red-sensitive silver halide emulsion layer of saidphotosensitive element adjacent thereto; and D. a second rupturablecontainer being positioned transverse at least a portion of a leadingedge of said photosensitive element so that a compressive force appliedto said second container by said pressure-applying members will effect adischarge of said second container''s contents between said alkalinesolution-permeable support of said photosensitive element and saidimage-receiving layer; said film unit containing an aromatic primaryamino color developing agent; one of said rupturable containerscontaining an opacifying agent; the other said rupturable containercontaining an alkaline processing composition; and said imagewiseexposure being effected through said transparent support; II. applyingcompressive force to said rupturable containers to effect saiddischarges between said layers; III. thereby effecting development ofeach of said exposed, direct positive silver halide emulsion layers,thus causing said aromatic primary amino color developing agent tobecome oxidized imagewise corresponding to unexposed areas of each saiddirect positive silver halide emulsion layer; IV. said oxidizeddeveloping agent reacting with said nondiffusible coupler present ineach said silver halide emulsion layer to form imagewise distributions,respectively, of diffusible cyan, magenta and yellow dye as a functionof said imagewise exposure of each said silver halide emulsion layer; V.whereby at least a portion of said imagewise distributions of diffusiblecyan, magenta and yellow dye diffuse to said image-receiving layer toprovide a positive dye image viewable through said transparent support;and VI. the composite structure being maintained intact subsequent tosaid processing.
 7. The photographic film unit of claim 3 wherein saidtop sheet is opaque, said first rupturable container contains analkaline processing composition and said second rupturable containercontains an opacifying agent.
 8. The photographic film unit of claim 3including a pH-lowering layer which is capable of lowering the pH of thefilm unit subsequent to diffusion therethrough by said alkalineprocessing composition.
 9. The photographic film unit of claim 3 whereineach said nondiffusible coupler is contained in a layer contiguous toeach said silver halide emulsion layer.
 10. A photographic film unitwhich is adapted to be processed by passing said unit between a pair ofjuxtaposed pressure-applying members comprising: I. a transparentsupport coated with an image-receiving layer having thereon aphotosensitive element comprising an alkaline solution-permeable supporthaving thereon the following layers in the order recited: a. a directpositive, red-sensitive silver halide emulsion layer containing anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible cyan dye; b. analkaline solution-permeable interlayer containing a compound capable ofscavenging oxidized aromatic primary amino color developing agent; c. adirect positive, green-sensitive silver halide emulsion layer containinga nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible magentadye; d. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent; and e. a direct positive, blue-sensitive silver halide emulsionlayer containing a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible yellow dye; each said nondiffusible coupler having theformula: DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 11. Thephotographic film unit of claim 10 wherein said aromatic primary aminocolor developing agent is a p-phenylenediamine developing agent which ispresent in said alkaline processing composition, said transparent sheetis coated with, successively, a pH-lowering layer and an alkalinesolution-permeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition, and each saiddirect positive silver halide emulsion is an internal image emulsionwherein the silver halide forms latent images predominantly inside thesilver halide grains.
 12. The photographic film unit of claim 11 whereinsaid first rupturable container contains an alkaline processingcomposition having therein an opacifying agent and said secondrupturable container contains an opacifying agent.
 13. The photographicfilm unit of claim 11 wherein said first rupturable container containsan opacifying agent, said second rupturable container contains analkaline processing composition and said film unit contains an opaquereflecting layer intermediate said image-receiving layer and saidphotosensitive element.
 14. A photographic film unit which is adapted tobe processed by passing said unit between a pair of juxtaposedpressure-applying members comprising: I. a transparent support coatedwith an image-receiving layer having thereon a photosensitive elementcomprising an alkaline solution-permeable support having thereon thefollowing layers in the order recited: a. a direct positive,blue-sensitive silver halide emulsion layer containing a nondiffusiblecoupler capable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye; b. an alkalinesolution-permeable interlayer containing a compound capable ofscavEnging oxidized aromatic primary amino color developing agent; c. adirect positive, green-sensitive silver halide emulsion layer containinga nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible magentadye; d. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent; and e. a direct positive, red-sensitive silver halide emulsionlayer containing a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible cyan dye; each said nondiffusible coupler having the formula:DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 15. Thephotographic film unit of claim 14 wherein said aromatic primary aminocolor developing agent is a p-phenylenediamine developing agent which ispresent in said alkaline processing composition, said top sheet iscoated with, successively, a pH-lowering layer and an alkalinesolution-permeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition, and each saiddirecT positive silver halide emulsion is an internal image emulsionwherein the silver halide forms latent images predominantly inside thesilver halide grains.
 16. The photographic film unit of claim 15 whereinsaid top sheet is transparent, said first rupturable container containsan opacifying agent and said second rupturable container contains analkaline processing composition having therein an opacifying agent. 17.The photographic film unit of claim 15 wherein said top sheet is opaque,said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.
 18. A photographic film unit which is adapted to be processed bypassing said unit between a pair of juxtaposed pressure-applying memberscomprising: I. a transparent support coated with an image-receivinglayer having thereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited: a. a Color-Forming Unit comprising:
 19. The photographicfilm unit of claim 18 wherein said aromatic primary amino colordeveloping agent is a p-phenylenediamine developing agent which ispresent in said alkaline processing composition, said developableemulsion is an emulsion of a hydrophilic colloid, silver thiocyanate andphysical development nuclei that can be developed to substantial densitywithout exposure to light, and said transparent sheet is coated with,successively, a pH-lowering layer and an alkaline solution-permeablepolymeric timing on the side thereof which is closest to saidphotosensitive element, said pH-lowering layer being capable of loweringthe pH of the film unit subsequent to diffusion therethrough by saidalkaline processing composition.
 20. The photographic film unit of claim19 wherein said first rupturable container contains an alkalineprocessing composition having therein an opacifying agent and saidsecond rupturable container contains an opacifying agent.
 21. Thephotographic film unit of claim 19 wherein said first rupturablecontainer contains an opacifying agent, said second rupturable containercontains an alkaline processing composition and said film unit containsan opaque reflecting layer intermEdiate said image-receiving layer andsaid photosensitive element.
 22. A photographic film unit which isadapted to be processed by passing said unit between a pair ofjuxtaposed pressure-applying members comprising: I. a transparentsupport coated with an image-receiving layer having thereon aphotosensitive element comprising an alkaline solution-permeable supporthaving thereon the following layers in the order recited: a. aColor-Forming Unit comprising:
 23. The photographic film unit of claim22 wherein said aromatic primary amino color developing agent is ap-phenylenediamine developing agent which is present in said alkalineprocessing composition, said developable emulsion is an emulsion of ahydrophilic colloid, silver thiocyanate and physical development nucleithat can be developed to substantial density without exposure to light,and said top sheet is coated with, successively, a pH-lowering layer andan alkaline solution-permeable polymeric timing layer on the sidethereof which is closest to said photosensitive element, saidpH-lowering layer being capable of lowering the pH of the film unitsubsequent to diffusion therethrough by said alkaline processingcomposition.
 24. The photographic film unit of claim 23 wherein said topsheet is transparent, said first rupturable container contains anopacifying agent and said second rupturable container container containsan alkaline processing composition having therein an opacifying agent.25. The photographic film unit of claim 23 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.
 26. A photographic film unit which is adapted to be processed bypassing said unit between a pair of juxtaposed pressure-applying memberscomprising a transparent support coated with an image-receiving layerhaving thereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited: a. a nuclei layer containing physical development nucleiand a nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible cyan dye;b. a spacer layer comprising a hydrophilic polymer; c. a red-senSitivesilver halide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; d. an alkalinesolution-permeable barrier layer for retaining soluble silver ioncomplex; e. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible magenta dye; f. aspacer layer comprising a hydrophilic polymer; g. a green-sensitivesilver halide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; h. an alkalinesolution-permeable barrier layer for retaining soluble silver ioncomplex; i. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible yellow dye; j. aspacer layer comprising a hydrophilic polymer; and k. a blue-sensitivesilver halide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; each said nondiffusiblecoupler having the formula DYE-LINK-(COUP-BALL)n orBALL-LINK-(COUP-SOL)n wherein:
 27. The photographic film unit of claim26 wherein said aromatic primary amino color developing agent is ap-phenylenediamine developing agent which is present in said alkalineprocessing composition, said silver halide solvent is present in saidrupturable container, and said transparent sheet is coated with,successively, a pH-lowering layer and an alkaline solution-permeablepolymeric timing layer on the side thereof which is closest to saidphotosensitive element, said pH-lowering layer being capable of loweringthe pH of the film unit subsequent to diffusion therethrough by saidalkaline processing composition.
 28. The photographic film unit of claim27 wherein said first rupturable container contains an alkalineprocessing composition having therein an opacifying agent and saidsecond rupturable container contains an opacifying agent.
 29. Thephotographic film of claim 27 wherein said first rupturable containercontains an opacifying agent, said second rupturable container containsan alkaline processing composition and said film unit contains an opaquereflecting layer intermediate said image-receiving layer and saidphotosensitive element.
 30. A photographic film unit which is adapted tobe processed by passing said unit between a pair of juxtaposedpressure-applying members comprising: I. a transparent support coatedwith an image-receiving layer having thereon a photosensitive elementcomprising an alkaline solution-permeable support having thereon thefollowing layers in the order recited: a. a blue-sensitive silver halideemulsion layer containing an immobilizing coupler which is capable ofreacting with oxidized aromatic primary amino color developing agent toform an immobile product; b. a spacer layer comprising a hydrophilicpolymer; c. a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible yellow dye; d. analkaline solution-permeable barrier layer for retaining soluble silverion complex; e. a green-sensitive silver halide emulsion layercontaining an immobilizing coupler which is capable of reacting withoxidized aromatic primary amino color developing agent to form animmobile product; f. a spacer layer comprising a hydrophilic polymer; g.a nuclei layer containing physical development nuclei and anondiffusible coupler capable of reacting with oxidized aromatic primaryamino color developing agent to produce a diffusible magenta dye; h. analkaline solution-permeable barrier layer for retaining soluble silverion complex; i. a red-sensitive silver halide emulsion layer containingan immobilizing coupler which is capable of reacting with oxidizedaromatic primary amino color developing agent to form an immobileproduct; j. a spacer layer comprising a hydrophilic polymer; and k. anuclei layer containing physical development nuclei and a nondiffusiblecoupler capable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; each saidnondiffusible coupler having the formula: DYE-LINK-(COUP-BALL)n orBALL-LINK-(COUP-SOL)n wherein:
 31. The photographic film unit of claim30 wherein said aromatic primary amino color developing agent is ap-phenylenediamine developing agent which is present in said alkalineprocessing composition, said silver halide solvent is present in saidrupturable container, and said top sheet is coated with, successively, apH-lowering layer and an alkaline solution-permeable polymeric timinglayer on the side thereof which is closest to said photosensitiveelement, said pH-lowering layer being capable of lowering the pH of thefilm unit subsequent to diffusion therethrough by said alkalineprocessing composition.
 32. The photographic film unit of claim 31wherein said top sheet is transparent, said first rupturable containercontains an opacifying agent and said second rupturable containercontains an alkaline processing composition having therein an opacifyingagent.
 33. The photographic film unit of claim 31 wherein said top sheetis opaque, said first rupturable container contains an alkalineprocessing composition and said second rupturable container contains anopacifying agent.
 34. A process of forming a transfer image comprising:I. imagewise exposing a photographic film unit comprising: a. atransparent support coated with an image-receiving layer having thereona photosensitive element comprising at least one photosensitive silverhalide emulsion layer having associated therewith a nondiffusible dyeimage-providing material capable of reacting with oxidized developingagent to produce a diffusible dye; b. a top sheet superposed over theoutermost layer of said photosensitive element from said transparentsupport; c. a first rupturable container positioned transverse at leasta portion of a leading edge of said photosensitive element so that acompressive force applied to said first container will effect adischarge of said first container''s contents between said top sheet andsaid outermost layer of said photosensitive element; and d. a secondrupturable container positioned transverse at least a portion of aleading edge of said photosensitive element so that a compressive forceapplied to said second container will effect a discharge of said secondcontainer''s contents between said image-receiving layer and theinnermost layer of said photosensitive element from said transparentsupport; said film unit containing a developing agent; one of saidrupturable containers containing an opacifying agent; and the other saidrupturable container containing an alkaline processing composition; II.applying compressive force to said rupturable containers to effect saiddischarges between said layers; III. thereby effecting development ofeach of said exposed silver halide emulsion layers; IV. forming animagewise distribution of diffusible dye as a function of said imagewiseexposure of each of said silver halide emulsion layers; V. at least aportion of each of said imagewise distributions of diffusible dyediffusing to said image-receiving layer to provide a positive dye imageviewable through said transparent support; and VI. maintaining thecomposite structure intact subsequent to said processing.
 35. Theprocess of claim 34 wherein said developing agent is an aromatic primaryamino color developing agent and the photosensitive portion of saidphotosensitive element comprises a red-sensitive silver halide emulsionlayer having associated therewith a nondiffusible coupler capable ofreacting with oxidized aromatic primary amino color developing agent toproduce a diffusible cyan dye, a green-sensitive silver halide emulsionlayer having associated therewith a nondiffusible coupler capable ofreacting with oxidized aromatic primary amino color developing agent toproduce a diffusible magenta dye and a blue-sensitive silver halideemulsion layer having associated therewith a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye.
 36. The process ofclaim 35 wherein said top sheet is transparent, said first rupturablecontainer contains an alkaline processing composition having therein anopacifying agent, said second rupturable container contains anopacifying agent, and said imagewise exposure being effected throughsaid top sheet.
 37. The process of claim 35 wherein said top sheet istransparent, said first rupturable container contains an opacifyingagent, said second rupturable container contains an alkaline processingcomposition having therein an opacifying agent, and said imagewiseexposure being effected through said transparent support.
 38. Theprocess of claim 35 wherein said top sheet is transparent, said firstrupturable container contains an opacifying agent, said secondrupturable container contains an alkaline processing composition, saidfilm unit contains an opaque reflecting layer intermediate saidimage-receiving layer and said photosensitive element, and saidimagewise exposure being effected through said top sheet.
 39. Theprocess of claim 35 wherein said top sheet is opaque, said firstrupturable container contains an alkaline processing composition, saidsecond rupturable container contains an opacifying agent, and saidimagewise exposure being effected through said transparent support. 40.The process of claim 35 wherein said film unit includes a pH-loweringlayer which is capable of lowering the pH of the film unit subsequent todiffusion therethrough by said alkaline processing composition.
 41. Theprocess of claim 35 wherein each said nondiffusible coupler is containedin a layer contiguous to each said silver halide emulsion layer.
 42. Aprocess of forming a transfer image comprising: I. imagewise exposing aphotographic film unit comprising: A. a transparent support coated withan image-receiving layer having thereon a photosensitive elementcomprising an alkaline solution-permeable support having thereon thefollowing Layers in the order recited: a. a direct positive,red-sensitive silver halide emulsion layer containing a nondiffusiblecoupler capable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; b. an alkalinesolution-permeable interlayer containing a compound capable ofscavenging oxidized aromatic primary amino color developing agent; c. adirect positive, green-sensitive silver halide emulsion layer containinga nondiffusible coupler capable of reacting with oxidized aromaticprimary amino color developing agent to produce a diffusible magentadye; d. an alkaline solution-permeable interlayer containing a compoundcapable of scavenging oxidized aromatic primary amino color developingagent; and e. a direct positive, blue-sensitive silver halide emulsionlayer containing a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible yellow dye; each said nondiffusible coupler having theformula: DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 43. Theprocess of claim 42 wherein said aromatic primary amino color developingagent is a p-phenylenediamine developing agent which is present in saidalkaline processing composition, said transparent sheet is coated with,successively, a pH-lowering layer and an alkaline solution-permeablepolymeric timing layer on the side thereof which is closest to saidphotosensitive element, said pH-lowering layer being capable of loweringthe pH of the film unit subsequent to diffusion therethrough by saidalkaline processing composition and each said direct positive silverhalide emulsion is an internal image emulsion wherein the silver halideforms latent images predominantly inside the silver halide grains. 44.The process of claim 43 wherein said first rupturable container containsan alkaline processing composition having therein an opacifying agentand said second rupturable container contains an opacifying agent. 45.The process of claim 43 wherein said first rupturable container containsan opacifying agent, said second rupturable container contains analkaline processing composition and said film unit contains an opaquereflecting layer intermediate said image-receiving layer and saidphotosensitive element.
 46. A process of forming a transfer imagecomprising: I. imagewise exposing a photographic film unit comprising:A. a transparent support coated with an image-receiving layer havingthereon a photosensitive element comprising an alkalinesolution-permeable support having thereon the following layers in theorder recited: a. a direct positive, blue-sensitive silver halideemulsion layer containing a nondiffusible coupler capable of reactingwith oxidized aromatic primary amino color developing agent to produce adiffusible yellow dye; b. an alkaline solution-permeable interlayercontaining a compound capable of scavenging oxidized aromatic primaryamino color developing agent; c. a direct positive, green-sensitivesilver halide emulsion layer containing a nondiffusible coupler capableof reacting with oxidized aromatic primary amino color developing agentto produce a diffusible magenta dye; d. an alkaline solution-permeableinterlayer containing a compound capable of scavenging oxidized aromaticprimary amino color developing agent; and e. a direct positive,red-sensitive silver halide emulsion layer containing a nondiffusiblecoupler capable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; each saidnondiffusible coupler having the formula: DYE-LINK-(COUP-BALL)n orBALL-LINK-(COUP-SOL)n wherein:
 47. The process of claim 46 wherein saidaromatic primary amino color developing agent is a p-phenylenediaminedeveloping agent which is present in said alkaline processingcomposition, said top sheet is coated with, successively, a pH-loweringlayer and an alkaline solution-permeable polymeric timing layer on theside thereof which is closest to said photosensitive element, saidpH-lowering layer being capable of lowering the pH of the film unitsubsequent to diffusion therethrough by said alkaline processingcomposition, and each said direct positive silver halide emulsion is aninternal image emulsion wherein the silver halide forms latent imagespredominantly inside the silver halide grains.
 48. The proceSs of claim47 wherein said top sheet is transparent, said first rupturablecontainer contains an opacifying agent and said second rupturablecontainer contains an alkaline processing composition having therein anopacifying agent.
 49. The process of claim 47 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable containers contains an opacifyingagent.
 50. A process of forming a transfer image comprising: I.imagewise exposing a photographic film unit comprising: A. a transparentsupport coated with an image-receiving layer having thereon aphotosensitive element comprising an alkaline solution-permeable supporthaving thereon the following layers in the order recited: a. aColor-Forming Unit comprising:
 51. The process of claim 50 wherein saidaromatic primary amino color developing agent is a p-phenylenediaminedeveloping agent which is present in said alkaline processingcomposition, said developable emulsion is an emulsion of a hydrophiliccolloid, silver thiocyanate and physical development nuclei that can bedeveloped to substantial density without exposure to light, and saidtransparent sheet is coated with, successively, a pH-lowering layer andan alkaline solution-permeable polymeric timing layer on the sidethereof which is closest to said photosensitive element, saidpH-lowering layer being capable of lowering the pH of the film unitsubsequent to diffusion therethrough by said alkaline processingcomposition.
 52. The process of claim 51 wherein said first rupturablecontainer contains an alkaline processing composition having therein anopacifying agent and said second rupturable container contains anopacifying agent.
 53. The process of claim 51 wherein said firstrupturable container contains an opacifying agent, said secondrupturable container contains an alkaline processing composition andsaid film unit contains an opaque reflecting layer intermediate saidimage-receiving layer and said photosensitive element.
 54. A process offorming a transfer image comprising: I. imagewise exposing aphotographic film unit comprising: A. a transparent support coated withan image-receiving layer having thereon a photosensitive elementcomprising an alkaline solution-permeable support having thereon thefollowing layers in the order recited: a. a Color-Forming Unitcomprising:
 55. The process of claim 54 wherein said aromatic primaryamino color developing agent is a p-phenylenediamine developing agentwhich is present in said alkaline processing composition, saiddevelopable emulsion is an emulsion of a hydrophilic colloid, silverthiocyanate and physical development nuclei that can be developed tosubstantial density without exposure to light, and said top sheet iscoated with, successively, a pH-lowering layer and an alkalinesolution-permeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition.
 56. The process ofclaim 55 wherein said top sheet is transparent, said first rupturablecontainer contains an opacifying agent and said second rupturablecontainer contains an alkaline processing composition having therein anopacifying agent.
 57. The process of claim 55 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.
 58. A process of forming a transfer image comprising: I.imagewise exposing a photographic film unit comprising: A. a transparentsupport coated with an image-receiving layer having thereon aphotosensitive element comprising an alkaline solution-permeable supporthaving thereon the following layers in the order recited: a. a nucleilayer containing physical development nuclei and a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible cyan dye; b. a spacer layercomprising a hydrophilic polymer; c. a red-sensitive silver halideemulsion layer containing an immobilizing coupler which is capable ofreacting with oxidized aromatic primary amino color developing agent toform an immobile product; d. an alkaline solution-permeable barrierlayer for retaining soluble silver ion complex; e. a nuclei layercontaining physical development nuclei and a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible magenta dye; f. a spacer layercomprIsing a hydrophilic polymer; g. a green-sensitive silver halideemulsion layer containing an immobilizing coupler which is capable ofreacting with oxidized aromatic primary amino color developing agent toform an immobile product; h. an alkaline solution-permeable barrierlayer for retaining soluble silver ion complex; i. a nuclei layercontaining physical development nuclei and a nondiffusible couplercapable of reacting with oxidized aromatic primary amino colordeveloping agent to produce a diffusible yellow dye; j. a spacer layercomprising a hydrophilic polymer; and k. a blue-sensitive silver halideemulsion layer containing an immobilizing coupler which is capable ofreacting with oxidized aromatic primary amino color developing agent toform an immobile product; each said nondiffusible coupler having theformula DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein:
 59. Theprocess of claim 58 wherein said aromatic primary amino color developingagent is a p-phenylenediamine developing agent which is present in saidalkaline processing composition, said silver halide solvent is presentin said rupturable container and said transparent sheet is coated with,successively, a pH-lowering layer and an alkaline solution-permeablepolymeric timing layer on the side thereof which is closest to saidphotosensitive element, said pH-lowering layer being capable of loweringthe pH of the film unit subsequent to diffusion therethrough by saidalkaline processing composition.
 60. The process of claim 59 whereinsaid first rupturable container contains an alkaline processingcomposition having therein an opacifying agent and said secondrupturable container contains an opacifying agent.
 61. The process ofclaim 59 wherein said first rupturable container contains an opacifyingagent, said second rupturable container contains an alkaline processingcomposition and said film unit contains an opaque reflecting layerintermediate said image-receiving layer and said photosensitive element.62. A process of forming a transfer image comprising: I. imagewiseexposing a photographic film unit comprising: A. a transparent supportcoated with an image-receiving layer having thereon a photosensitiveelement comprising an alkaline solution-permeable support having thereonthe following layers in the order recited: a. a blue-sensitive silverhalide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; b. a spacer layercomprising a hydrophilic polymer; c. a nuclei layer containing physicaldevelopment nuclei and a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible yellow dye; d. an alkaline solution-permeable barrier layerfor retaining soluble silver ion complex; e. a green-sensitive silverhalide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; f. a spacer layercomprising a hydrophilic polymer; g. a nuclei layer containing physicaldevelopment nuclei and a nondiffusible coupler capable of reacting withoxidized aromatic primary amino color developing agent to produce adiffusible magenta dye; h. an alkaline solution-permeable barrier layerfor retaining soluble silver ion complex; i. a red-sensitive silverhalide emulsion layer containing an immobilizing coupler which iscapable of reacting with oxidized aromatic primary amino colordeveloping agent to form an immobile product; j. a spacer layercomprising a hydrophilic polymer; and k. a nucleI layer containingphysical development nuclei and a nondiffusible coupler capable ofreacting with oxidized aromatic primary amino color developing agent toproduce a diffusible cyan dye; each said nondiffusible coupler havingthe formula: DYE-LINK-(COUP-BALL)n or BALL-LINK-(COUP-SOL)n wherein: 63.The process of claim 62 wherein said aromatic primary amino colordeveloping agent is a p-phenylenediamine developing agent which ispresent in said alkaline processing composition, said silver halidesolvent is present in said rupturable container and said top sheet iscoated with, successively, a pH-lowering layer and an alkalinesolution-permeable polymeric timing layer on the side thereof which isclosest to said photosensitive element, said pH-lowering layer beingcapable of lowering the pH of the film unit subsequent to diffusiontherethrough by said alkaline processing composition.
 64. The process ofclaim 63 wherein said top sheet is transparent, said first rupturablecontainer contains an opacifying agent and said second rupturablecontainer contains an alkaline processing composition having therein anopacifying agent.
 65. The process of claim 63 wherein said top sheet isopaque, said first rupturable container contains an alkaline processingcomposition and said second rupturable container contains an opacifyingagent.